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Gmail Security Alert: How to Protect Your Account From Remus Stealer Malware

A malware called Remus Stealer has raised concerns about how criminals could access private emails and account information.

byOluwagbohunmi Bajela

November 11, 2026

Once it's on your computer or phone, it can quietly collect data while you're signed into Gmail. Credit: ITdaily

Cybersecurity researchers are sounding the alarm to Gmail users over a new malware security alert called Remus Stealer. It is malicious software said to give cybercriminals access to search through a victim’s Gmail inbox, read personal emails, and intercept security codes.

Google advised affected users to act now by changing their passwords and revoking suspicious login sessions. ‘Users can invalidate stolen sessions by removing malware from the affected device and revoking active sessions,’ a Google spokesperson told Cybernews.

However, Hudson Rock, an Israeli cybersecurity company specialising in infostealer malware, warned that changing a password is essential but may not be sufficient if hackers have established other ways to access an account.

According to the Daily Mail, some users of the tool say the malware’s access continues even after you change your Google password or close your browser.

What Google is Saying

Google pushed back suggestions that the malware exploits a previously unknown security flaw in Gmail.

“There is no Gmail or Google vulnerability at play here,” a Google spokesperson told CyberNews.

The company insists this is the usual problem of malware stealing session information from an infected computer. Still, the claims are serious enough that experts are telling people to act immediately.

What You Should Do With Your Gmail Now

Like most of these threats, Remus usually gets onto your device through shady downloads or random links people share. Once it’s on your computer or phone, it can quietly collect data while you’re signed into Gmail.

If you use Gmail, do the following now:

Change your Google password, but do it from a clean device (not the one you suspect might be infected).
Sign out of all sessions. Go to your Google Account and sign out of any unfamiliar devices your account is linked to.
Check for suspicious activity. Look at email forwarding, filters, and any third-party apps that have access to your account. Revoke anything you don’t recognise.
Enable 2-Step Verification or use passkeys if you can.
Scan your devices with a reputable antivirus and remove any malware.
Secure other accounts like banks, Instagram, Twitter/X, shopping apps, etc., that use your Gmail for password resets.
Google also recommends turning on Enhanced Safe Browsing in Chrome and being extra careful about what you download.

If you use Gmail for everything, from bank alerts and OTP codes to work emails, WhatsApp backups, or those private chats, this is your urgent wake-up call.