What kind of scam is "Zoho Server Update"
Phishing/ScamAlso Known As: Zoho Server Update phishing scam
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What kind of email is "Zoho Server Update Email Scam"?
We have inspected this email and determined it is a phishing scam. The message is disguised as an official notification from Zoho, falsely claiming that a server upgrade is urgently required. Its purpose is to trick recipients into handing over their email login credentials on a fraudulent website. This email should be ignored to avoid account compromise.
"Zoho Server Update Email Scam" email scam overview
The email claims to come from "The Zoho Server Team" and warns that a major upgrade is now available for Zoho services. It highlights supposed benefits such as faster performance, improved security, and AI-powered features, then adds a deadline: recipients are told that failing to upgrade by August 31, 2026 may lead to limited support and reduced performance.
The link inside the email does not initiate any real Zoho process. Clicking it redirects to a fraudulent page at bj9810[.]craftum.io, which has no affiliation with Zoho or its services.
The phishing page is designed to detect the visitor's email service provider and display a matching fake login page. In the observed case, it presented a "Gmail Email Login" form overlaid on a spoofed Gmail interface. Recipients using other email services would see their own provider's branding instead, making the deception harder to spot.
Any credentials entered into this fake form are sent directly to the scammers. Email account access gives cybercriminals the ability to read private messages, hijack linked accounts, and reset passwords on other platforms. It must be noted that Zoho Corporation has no connection to this scam.
| Name | Zoho Server Update phishing scam |
| Threat Type | Phishing, Scam, Social Engineering, Fraud |
| Fake Claim | Recipients must immediately upgrade their Zoho server or risk reduced performance and limited support |
| Disguise | Official server upgrade notification from Zoho |
| Related Domain | bj9810[.]craftum.io |
| Threat Status (Phishing Site) | PCrisk Website Scanner Results |
| Symptoms | Unauthorized online purchases, changed online account passwords, identity theft, illegal access of the computer. |
| Distribution methods | Deceptive emails, rogue online pop-up ads, search engine poisoning techniques, misspelled domains. |
| Damage | Loss of sensitive private information, monetary loss, identity theft. |
| Malware Removal (Windows) |
To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. Download Combo CleanerTo use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by RCS LT, the parent company of PCRisk.com. |
Email scams in general
In conclusion, this is a phishing email disguised as a Zoho service notification. Its goal is to steal email login credentials through a fake login page that adapts to mimic the recipient's own email provider. Recipients should delete this message without clicking any links. In some cases, scam emails like this are also used to distribute malware.
More examples of similar scam emails are Account Deletion Request, Your Password Is About To Expire, and Confirmation Of Request For Quotation (RFQ).
How do spam campaigns infect computers?
Spam campaigns spread malware through malicious email attachments and embedded links. Attachments can take many forms - executable files, archives, PDF documents, Microsoft Office files, and scripts. Opening an executable typically launches the malware right away, while document formats often require the user to enable macros or perform other steps before any infection begins.
Links in spam emails can point to sites that automatically download malware or trick visitors into running harmful programs manually. In most cases, some degree of user interaction is required before the system is compromised - whether that means opening an attachment, clicking a link, or following instructions on a malicious page.
How to avoid installation of malware?
Be cautious with unsolicited emails, especially those urging immediate action or warning about account issues. Avoid clicking links or opening attachments from unknown senders. Even messages that appear to come from a well-known company should be treated with skepticism if they arrive unexpectedly.
Download software only from official sources and trusted app stores. Avoid pirated programs, illegal activation tools, and key generators - these frequently carry hidden malware. Keeping your operating system and applications updated closes off many security vulnerabilities that attackers commonly exploit.
Use a reputable antivirus solution and scan your system regularly. If you have already opened malicious attachments, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.
Text presented in the "Zoho Server Update Email Scam" email letter:
Subject: Action Required: Upgrade Your Zoho Server Now
Action Required: Upgrade Your Zoho Server Now
New Zoho Server Update Available!Hello Team ,
A major server upgrade is now available for your Zoho services. This upgrade delivers faster performance, enhanced security, and new productivity features. We strongly recommend upgrading at your earliest convenience to ensure uninterrupted access to the latest improvements.
Ready to upgrade?
Click the button below to start your server upgrade now. The process takes just 5–10 minutes and includes automatic backup.[Upgrade Now]
Estimated time: 5–10 mins | Secure & encrypted
What you gain by upgrading now:
50% faster API response times and database queries
Advanced security patches and zero-day vulnerability fixes
New features including AI-powered automation and enhanced reporting
Real-time analytics dashboard with custom insights[Upgrade Your Server Now] or check upgrade status
Reminder: If you do not upgrade by 31 August 2026, your services may continue running on an older version with limited support and reduced performance.
Regards,
The Zoho Server Team
A fake email login page used in this scam:
Instant automatic malware removal:
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Types of malicious emails:
If you opened an attachment or downloaded a file from a suspicious email, run a full system scan with Combo Cleaner. If you only received the email and didn't engage with it, you don't need to scan anything - just identify the scam and delete it. The full procedure below covers both situations and what to do if you already clicked, replied, or sent money.
Credential theft Phishing emails
Fake login pages disguised as PayPal, Microsoft, Apple, banks, or social networks. The email pushes a link to a near-perfect copy of the real login screen. The moment you type your username and password, the attacker has them.
Common subject lines
- "Action required: confirm your account"
- "Your password expires today"
- "Unusual sign-in attempt detected"
- "Verify your billing information"
Malware delivery Emails with malicious attachments
Trojans hidden inside fake invoices, faxes, shipping confirmations, or Office documents. Opening the attachment runs the payload and infects the system - often with an info-stealer or remote-access trojan.
Common subject lines
- "Invoice INV-2026-XXXX attached"
- "Fax received - 3 pages"
- "Your shipping document is ready"
- "Voicemail from +1-XXX-XXX-XXXX"
Extortion Sextortion emails
Fake claims of webcam recordings demanding cryptocurrency. Almost always a bluff: the attacker pulls a real password from an old data breach to make the threat look credible, then claims to have video of you. They have no recording and no access.
Common subject lines
- "I know your password is XXXX"
- "Your account has been hacked"
- "I have recorded you - 48 hours to pay"
- "You have been compromised"
Callback fraud Refund & callback scams
"Your subscription was renewed for $499 - call to cancel." Norton, McAfee, Geek Squad, PayPal, and Wells Fargo variants are all common. There's no real subscription. The phone number in the email connects directly to the scammer, who walks you through "refunding" yourself - which is actually them stealing money from your bank.
Common subject lines
- "Norton subscription auto-renewed - $499.99"
- "McAfee Total Protection invoice"
- "Geek Squad order confirmation"
- "Your PayPal payment is being processed"
Credential theft Account suspension & verification scams
"Your account will be deleted in 24 hours - verify now." The artificial deadline is the whole point: it pressures you to click before checking details. The "verify" link goes to a phishing page styled to look like the real provider.
Common subject lines
- "Your account will be deleted in 24 hours"
- "Suspicious activity detected - verify now"
- "Final warning: account closure"
- "Action required to keep your account active"
Mixed payload Delivery & package scams
Fake DHL, USPS, UPS, or FedEx tracking, customs fees, or "package undeliverable" notices. Targets anyone expecting a parcel - the timing alone catches many people. The link hides either phishing (asking for card details to "release" the package) or a malware download.
Common subject lines
- "Your DHL package is held at customs"
- "USPS - delivery attempt failed"
- "FedEx tracking update - action required"
- "Pay $2.99 redelivery fee to release your parcel"
Remote access Tech support scams
Fake Microsoft, Apple, or "Windows Defender" security alerts pushing a phone number. Real Microsoft and Apple never email a phone number to call. The number connects you to a scammer who asks for remote access to "fix" the imaginary problem and then demands payment.
Common subject lines
- "Microsoft Defender expired - renew now"
- "Apple ID security alert"
- "Critical: virus detected on your PC"
- "Windows license expired - call now"
Wire fraud Advance-fee scams
Inheritance, lottery wins, romance, or business deals that ask for a small fee to release a much larger sum. The classic "Nigerian prince" 419 family of frauds. Once you pay the first fee, more fees appear (taxes, lawyer, transfer charges) until you stop paying. The promised money never exists.
Common subject lines
- "Inheritance from a relative you didn't know about"
- "You won the international lottery"
- "URGENT - business proposal worth $XX million"
- "Compensation fund release for fraud victims"
Wire fraud Business email compromise (BEC)
CEO impersonation asking employees to wire money or buy gift cards, or fake supplier invoices with newly "updated" bank details for payment redirection. The email often spoofs a real internal executive's display name and uses an external lookalike domain.
Common subject lines
- "Quick task - need you to buy gift cards"
- "Updated banking details for invoice payment"
- "Wire transfer request - urgent"
- "Are you available?" (CEO impersonation opener)
How to spot a malicious email?
Check the sender's actual address, not the display name
The display name (the human-readable part) is trivial to fake. Always check the full address that comes after it. Common red flags:
- Domain mismatch -
service@paypa1.com,support@micros0ft-help.com, look-alike domains using digits or extra hyphens - Free-email impersonation - any "official" message from a bank, courier, or platform sent from a
@gmail.com,@outlook.com, or@yahoo.comaddress - Reply-To mismatch - the From address looks legitimate but Reply-To points somewhere completely different
Real companies own their domains and send mail from them. A "DHL" message from a Gmail address is never legitimate, regardless of how convincing the body looks.
Watch for urgency, threats, and generic greetings
Scams almost always rush you. The point is to make you act before you think. Treat any of the following as a strong signal:
- "Your account will be deleted in 24 hours"
- "Final notice" / "Immediate action required"
- "Dear Customer" or "Dear User" instead of your real name
- Threats of fines, account closure, legal action, or arrest
- Promises of refunds, prizes, or money you didn't earn
- Spelling and grammar mistakes in messages claiming to come from a major brand
Hover over every link before clicking
On a desktop, hover the mouse over the link without clicking. The real destination shows in the bottom-left status bar of your browser or email client. On a phone, long-press the link to preview the URL.
- Real Microsoft, PayPal, or bank links go to those exact domains, not redirects through unrelated sites
- Shortened URLs (
bit.ly,tinyurl,t.co) hide the real destination - never click them in unsolicited mail - The visible link text and the actual URL must match - mismatches are the single biggest phishing red flag
When in doubt, don't click the link. Open a new browser tab and type the company's address yourself, then log in normally. If there really is an issue with your account, you'll see it there.
Treat unexpected attachments as hostile
If you didn't ask for the file, don't open it - even if it appears to come from someone you know. Categories that should never be opened from email without verification through another channel:
.exe,.scr,.iso,.img,.vbs,.bat- executables, never legitimate attachments.docx,.xlsx,.pptxwith "Enable macros" prompts - the macros run the malware.pdfwith "Click here to view" buttons - usually a phishing redirect, not a real document.zip,.rar,.7zarchives, especially password-protected ones - the password defeats the email scanner
If you only received the email and didn't reply, click, or open anything, the steps below are all you need. Your computer is not infected.
Don't reply, don't click "unsubscribe"
Replying confirms your address is real and monitored, which gets you added to higher-value scam lists. The "unsubscribe" link in a scam message is rarely a real opt-out - it usually leads to a phishing page or downloads a tracking pixel.
Instead, mark the message as junk or phishing inside your email client (this trains the spam filter), then block the sender.
Report the scam to your email provider and authorities
Inside your email client:
- Gmail: open the message → ⋮ menu → Report phishing
- Outlook / Outlook.com: ⋯ menu → Report → Report phishing
- Apple Mail / iCloud: Move to Junk, then forward to
reportphishing@apple.com
Forward or report to authorities:
After reporting, delete the email and empty the Trash folder so you don't accidentally open it later.
Pick the step below that matches what you did. If multiple apply, work through them in the order they appear - the steps are arranged from lowest to highest risk.
You only clicked a link (didn't enter anything or download anything)
Close the page right away. Don't enter any information, even if the page looks legitimate.
- Clear your browser cache and cookies for the last hour - → Last hour → check Cookies and Cached files
- Run a quick scan with Combo Cleaner in case the page tried to drop a file silently (drive-by download)
- Update your browser to the latest version - most drive-by exploits target outdated browsers
- Watch for new browser pop-ups, redirects, or unfamiliar notifications over the next few days
Modern browsers block most drive-by attacks, but a single click on a phishing page can still be enough on an outdated browser or unpatched plugin. A quick scan catches anything that landed silently.
You opened an attachment or downloaded a file - run a full malware scan
Opening an attachment is the most common path to actual infection. Treat the system as compromised until the scans below come back clean. Work through these sub-steps in order:
Unplug Ethernet and turn off Wi-Fi. If the attachment was an info-stealer or remote-access trojan, this stops it from sending data out or receiving commands. Keep the network off until you've booted into Safe Mode (next step) - you'll reconnect there briefly to download the scanners.
Windows 11: → Troubleshoot → Advanced options → Startup Settings → Restart → press 5 or F5.
Windows 10: hold Shift, click Power → Restart → Troubleshoot → Advanced options → Startup Settings → Restart → press F5.
Once Safe Mode has loaded, turn Wi-Fi back on and download Combo Cleaner (used in 8.4) and Microsoft Safety Scanner (used in 8.5). Safe Mode loads only minimal drivers, so most malware can't auto-run while you're getting the tools. Save both installers to your Desktop.
Reboot to normal Windows. Open . Select Microsoft Defender Antivirus (offline scan) and click Scan now. The PC restarts into a stripped-down environment and scans the disk before Windows fully loads - this is what catches rootkits and bootkits.
VB100 certified. Includes anti-trojan, registry/persistence scanning, and anti-spyware in one pass. The 7-day free trial is available.
Download Combo CleanerInstall Combo Cleaner and run a full system scan (not the quick scan). Let it complete fully, review what it found, and apply the recommended actions. Combo Cleaner will quarantine known trojans and remove their persistence in the registry.
Download Microsoft Safety Scanner (MSERT.exe). The binary expires every 10 days, which means every download has the latest signatures. Run a full scan after Combo Cleaner to catch anything one engine alone might miss.
Many email-borne trojans drop adware that hijacks browsers. Reset each browser you use:
Chrome: chrome://settings/reset → Restore settings to their original defaults. Then chrome://settings/content/notifications - remove unfamiliar sites.
Edge: edge://settings/reset. Then edge://settings/content/notifications.
Firefox: about:support → Refresh Firefox.
Open and confirm Real-time protection, Cloud-delivered protection, and Tamper Protection are all on. Then run and update browsers and applications.
If the scans keep finding new threats on each run, or files reappear after deletion, you may have a deeper compromise that needs a clean Windows reinstall. See pcrisk's full manual malware removal guide for the extended procedure (Process Explorer, Autoruns, hosts file inspection).
You entered credentials on a fake login page
Assume the attacker has your password and is using it right now. Speed matters.
- Change the password from a different, known-clean device (your phone is fine if it's not infected). Don't reuse the old password anywhere else.
- Enable two-factor authentication if you haven't already. Prefer an authenticator app or hardware key over SMS.
- Sign out of all sessions - most platforms have a "sign out everywhere" option in security settings, which kicks the attacker out.
- Review recent activity - look for unfamiliar logins, new devices, forwarding rules, or app permissions. Remove anything you don't recognize.
- Check your other accounts - if you reused that password anywhere else, change it there too. Check your exposure at haveibeenpwned.com.
- Update security questions - the attacker may have seen the answers in your account profile.
If you only have time to change one password, change your primary email password - it's the recovery hub for every other account. An attacker who controls your email can reset everything else.
You sent money or shared bank, card, or ID details
Time is the single biggest factor in recovering money. Banks can sometimes recall a wire or reverse a card transaction within the first few hours.
- Call your bank or card issuer immediately. Use the number on the back of the card, not any number from the scam email. Ask them to freeze the card, reverse the transaction if possible, and flag the account for fraud monitoring.
- If you sent a wire transfer or used a money-transfer service (Western Union, MoneyGram, Zelle, Wise), call them directly and request a recall. Some can be reversed within minutes if reported fast.
- If you sent cryptocurrency or gift cards, recovery is unlikely - but report it anyway, since law enforcement tracks these patterns.
- File a police report. You'll need the report number for any insurance, bank, or credit-bureau claim. Save the report number.
- File with the right authority for your country:
- US: ic3.gov + reportfraud.ftc.gov
- UK: reportfraud.police.uk (Report Fraud, the successor to Action Fraud; 0300 123 2040)
- Canada: antifraudcentre.ca
- Australia: scamwatch.gov.au
- EU: your national CERT or police cybercrime unit
- Set fraud alerts on all major credit bureaus if you shared any ID details. US: Equifax, Experian, TransUnion. UK: Experian, Equifax, TransUnion (Cifas Protective Registration is a stronger option).
- Save all evidence - the original email (with full headers), screenshots of the fake site, transaction records, any phone numbers or chat logs.
Final scan and startup-app check
Reconnect to the network and run one final full scan with Combo Cleaner, followed by a Windows Defender quick scan. Then open Task Manager (Ctrl + Shift + Esc) and switch to Startup apps - disable anything unfamiliar.
Make sure Windows, browsers, and any applications you use are fully up to date. The infection vector that worked on you once usually involves outdated software.
Monitor accounts and credit for 30 days
Most fraud follow-ups land in the first month. Until that window closes, keep watching:
- Bank and card statements - daily for the first week, then weekly
- Email - watch for password-reset confirmations or login alerts you didn't trigger
- Credit report - US: free at annualcreditreport.com; UK: Experian, Equifax, TransUnion all have free tiers
- Breach alerts - sign up at haveibeenpwned.com to be notified when your email appears in new leaks
If anything new appears in any of those, treat it as a continuing compromise: change passwords again, contact the bank again, and update the police report.
Important: If you didn't click anything, didn't reply, and didn't open any attachment, your computer is not infected - just delete the email and move on. If you opened an attachment or downloaded a file, run an automated scan with Combo Cleaner and Windows Defender and stop there. That path catches the vast majority of email-borne malware without the risk of breaking Windows by deleting the wrong file.
Frequently Asked Questions (FAQ)
Why did I receive this email?
Scam emails of this type are distributed in bulk and are not personally targeted. Cybercriminals collect email addresses from data breaches, fake websites, and other sources, then send the same deceptive message to a large number of recipients at once.
I have provided my personal information when tricked by this email, what should I do?
If you entered your email login credentials, change your password right away and enable two-factor authentication on the account. Also update passwords on any other service that shares the same login details.
If you provided payment details or other sensitive personal data, contact your bank or the relevant authorities as soon as possible.
I have downloaded and opened a malicious file attached to an email, is my computer infected?
It depends on the file type. Executable files tend to compromise a device almost immediately when opened. Documents, archives, and similar formats usually require additional steps from the user - such as enabling macros or running an embedded installer - before any malware activates.
I have read the email but did not open the attachment, is my computer infected?
Reading or viewing an email is harmless on its own. Your computer is not at risk unless you clicked a link or opened an attached file and interacted with it in some way.
Will Combo Cleaner remove malware infections that were present in email attachment?
Combo Cleaner can detect and remove most known malware infections. Running a full system scan is recommended, since some advanced threats can conceal themselves deep within the system and require thorough detection to eliminate.
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Tomas Meskauskas
Expert security researcher, professional malware analyst
I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats.
PCrisk security portal is brought by a company RCS LT.
Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.
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DonatePCrisk security portal is brought by a company RCS LT.
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Our malware removal guides are free. However, if you want to support us you can send us a donation.
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