What sort of email scam is "cPanel Email Quota Limit"

What is "cPanel Email Quota Limit" scam?

We have examined this email and determined it is a phishing scam that impersonates cPanel, a widely used web hosting control panel, to convince recipients that their email storage has been exceeded. The goal is to trick users into entering their login credentials on a fake webmail page. This email should be deleted immediately to prevent account compromise.

More about the "cPanel Email Quota Limit" scam email

Both variants of this scam follow the same basic playbook. The first claims the recipient's email quota has reached 98% and threatens that the account will be permanently disabled unless an upgrade is completed. The second poses as an automated cPanel Service Monitor alert, warning that a hosting disk quota has reached a critical threshold.

Each message includes a button pushing the recipient to act immediately. Clicking either button leads to a fake webmail login page bearing cPanel's branding, hosted on Firebase Storage - a legitimate Google cloud platform that scammers abuse to avoid easy detection.

The phishing page prompts visitors to enter their email address and password. Any details provided go straight to the attackers, not to any real hosting or email service.

Stolen credentials can be used to take over the victim's email account. Scammers can then read private messages, impersonate the account owner, target contacts with further phishing attempts, or try the same credentials on other platforms. For business accounts, the consequences can be severe.

cPanel, L.L.C. has no connection to this scam. Its name and branding are being used without authorization by cybercriminals to make the fake messages look credible.

Email scams in general

In summary, this is a credential phishing scam that uses cPanel's name to panic recipients into entering their email login details on a fraudulent website. The manufactured urgency around storage limits is designed to make people act quickly without stopping to verify. Any email making similar demands should be treated with suspicion.

Sometimes, these scams are used to spread malware rather than steal credentials. Malicious email attachments and links to deceptive download pages are both common delivery methods attackers use.

More examples of similar scam emails targeting email service users are cPanel Final Account Upgrade State, FedEx Shipping Labels/Documents In PDF Format, and DHL Express Commerce Status Update.

How do spam campaigns infect computers?

Threat actors frequently deliver malware by attaching harmful files to emails or embedding links that lead to malicious download sites. These files come in many formats - executable programs, compressed archives, PDF documents, Office files, JavaScript, and others. Opening such a file triggers the malware download or installation process.

Certain file types require extra interaction before the malware activates. Office documents, for instance, may prompt the user to enable malicious macro commands. Regardless of the method, the malware relies on the victim taking some action to execute.

How to avoid installation of malware?

Treat any unexpected email with caution, especially one urging you to click a link or open an attachment. If a message claims to be from a legitimate service, go to that service's official website directly rather than following any embedded links.

Only download software from official sources and verified app stores. Steer clear of pirated software, key generators, and activation tools, as these are commonly used to distribute malware. Keep your operating system and all applications updated to reduce exposure to known vulnerabilities.

Use a reputable antivirus program and make sure it remains active. If you have already interacted with a suspicious attachment, run a scan with Combo Cleaner Antivirus for Windows to automatically identify and remove any threats.

Text presented in the "cPanel Email Quota Limit" email letter:

Subject: Update Email Account

Dear ********

You are requested to update your email account service provider.

Your email quota has reached 98% and will soon exceed its limit and you may not be able to send or receive new message until you upgrade.

Please click the button below to complete the update process:

[CLICK TO UPGRADE]

WARNING.
Failure to upgrade your E-mail account ******** will permanently be disabled.
Best Regards.
cPanel® Support Team.
© 2026 cPanel. All Rights Reserved.

A fake webmail login page used in this scam:

Another variant of this scam email:

Text presented in this variant:

Subject: cPanel Service Monitor: Storage limit reached on ******** - Priority: High

cPanel
cPanel Service Monitor: Storage limit reached on "********"

The hosting disk quota for "********" has reached its critical limit.

The storage volume for has reached a critical threshold. Mail delivery to this mailbox may fail or bounce back to the sender until adequate space is cleared.
[Access cPanel Disk Manager]

Alert: Click the control link above immediately to re-allocate storage and lift delivery restrictions. 5zhX4m

Automated Infrastructure Alert. Generated by the cPanel Service Monitor module.

You can disable these alerts through cPanel: Change Notification Settings

This message was sent by an automated system. No reply is needed.
© 2026 cPanel, L.L.C.

Instant automatic malware removal:

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By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To 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.

Quick menu:

• What is cPanel Email Quota Limit phishing scam?
• Types of malicious emails.
• How to spot a malicious email?
• What to do if you fell for an email scam?

Types of malicious emails:

Phishing Emails

Most commonly, cybercriminals use deceptive emails to trick Internet users into giving away their sensitive private information, for example, login information for various online services, email accounts, or online banking information.

Such attacks are called phishing. In a phishing attack, cybercriminals usually send an email message with some popular service logo (for example, Microsoft, DHL, Amazon, Netflix), create urgency (wrong shipping address, expired password, etc.), and place a link which they hope their potential victims will click on.

After clicking the link presented in such email message, victims are redirected to a fake website that looks identical or extremely similar to the original one. Victims are then asked to enter their password, credit card details, or some other information that gets stolen by cybercriminals.

Emails with Malicious Attachments

Another popular attack vector is email spam with malicious attachments that infect users' computers with malware. Malicious attachments usually carry trojans that are capable of stealing passwords, banking information, and other sensitive information.

In such attacks, cybercriminals' main goal is to trick their potential victims into opening an infected email attachment. To achieve this goal, email messages usually talk about recently received invoices, faxes, or voice messages.

If a potential victim falls for the lure and opens the attachment, their computers get infected, and cybercriminals can collect a lot of sensitive information.

While it's a more complicated method to steal personal information (spam filters and antivirus programs usually detect such attempts), if successful, cybercriminals can get a much wider array of data and can collect information for a long period of time.

Sextortion Emails

This is a type of phishing. In this case, users receive an email claiming that a cybercriminal could access the webcam of the potential victim and has a video recording of one's masturbation.

To get rid of the video, victims are asked to pay a ransom (usually using Bitcoin or another cryptocurrency). Nevertheless, all of these claims are false - users who receive such emails should ignore and delete them.

How to spot a malicious email?

While cyber criminals try to make their lure emails look trustworthy, here are some things that you should look for when trying to spot a phishing email:

• Check the sender's ("from") email address: Hover your mouse over the "from" address and check if it's legitimate. For example, if you received an email from Microsoft, be sure to check if the email address is @microsoft.com and not something suspicious like @m1crosoft.com, @microsfot.com, @account-security-noreply.com, etc.
• Check for generic greetings: If the greeting in the email is "Dear user", "Dear @youremail.com", "Dear valued customer", this should raise suspiciousness. Most commonly, companies call you by your name. Lack of this information could signal a phishing attempt.
• Check the links in the email: Hover your mouse over the link presented in the email, if the link that appears seems suspicious, don't click it. For example, if you received an email from Microsoft and the link in the email shows that it will go to firebasestorage.googleapis.com/v0... you shouldn't trust it. It's best not to click any links in the emails but to visit the company website that sent you the email in the first place.
• Don't blindly trust email attachments: Most commonly, legitimate companies will ask you to log in to their website and to view any documents there; if you received an email with an attachment, it's a good idea to scan it with an antivirus application. Infected email attachments are a common attack vector used by cybercriminals.

To minimise the risk of opening phishing and malicious emails we recommend using Combo Cleaner Antivirus for Windows. 

Example of a spam email:

What to do if you fell for an email scam?

• If you clicked on a link in a phishing email and entered your password - be sure to change your password as soon as possible. Usually, cybercriminals collect stolen credentials and then sell them to other groups that use them for malicious purposes. If you change your password in a timely manner, there's a chance that criminals won't have enough time to do any damage.
• If you entered your credit card information - contact your bank as soon as possible and explain the situation. There's a good chance that you will need to cancel your compromised credit card and get a new one.
• If you see any signs of identity theft - you should immediately contact the Federal Trade Commission. This institution will collect information about your situation and create a personal recovery plan.
• If you opened a malicious attachment - your computer is probably infected, you should scan it with a reputable antivirus application. For this purpose, we recommend using  Combo Cleaner Antivirus for Windows.
• Help other Internet users - report phishing emails to Anti-Phishing Working Group, FBI’s Internet Crime Complaint Center, National Fraud Information Center and U.S. Department of Justice.

Frequently Asked Questions (FAQ)

Why did I receive this email?

These emails are distributed in bulk to large numbers of people at once and are not targeted at specific individuals. Scammers gather email addresses through methods such as data breaches, purchased mailing lists, and deceptive sign-up pages.

I have provided my personal information when tricked by this email, what should I do?

Change any compromised passwords immediately, starting with your email account. If the same password was used on other services, update those as well. For sensitive data such as payment card information or identification documents, contact the relevant institutions right away.

I have downloaded and opened a malicious file attached to an email, is my computer infected?

Executable files (.exe and similar formats) can compromise a device almost immediately after being opened. Document types like PDFs or Word files generally require additional user interaction - for example, enabling macros - before malware activates. The risk depends on the file format and what you did with it.

I have read the email but did not open the attachment, is my computer infected?

No. Simply reading an email without clicking links or opening attachments is safe. Malware requires the user to take an active step - such as opening a file or following a malicious link - to infect the system.

Will Combo Cleaner remove malware infections that were present in email attachment?

Combo Cleaner is capable of detecting and removing most known malware. However, running a full system scan is recommended to ensure that sophisticated threats hidden deeper in the system are also caught and eliminated.