Closing All Roundcube Version Users Without DNS Scam

Cybersecurity experts have analyzed a new phishing scheme circulating under the subject line 'Closing All Roundcube Version Users Without DNS.' The campaign attempts to deceive recipients by impersonating legitimate Roundcube Webmail update notifications. Its primary goal is to trick users into visiting a fraudulent login page and revealing their account credentials.

The fraudulent emails falsely claim that all users running specific versions of Roundcube without DNS verification will have their accounts closed. To avoid this supposed deactivation, recipients are urged to verify their accounts by clicking a link labeled 'Verify Your Account Now.'

These messages may appear professional and convincing, often mimicking official Roundcube formatting and language. However, the emails are not associated with Roundcube, its developers, or any legitimate organization or service provider.

Deceptive Promises and False Urgency

The emails include promises of an improved user experience — such as faster message loading, enhanced search functionality, and stronger security features — to make the message seem credible. They also warn that unverified accounts could face restrictions or closure within 24 hours. This fabricated sense of urgency pressures recipients into acting without questioning the message's authenticity.

Once users click the link, they are redirected to a fraudulent Webmail login portal that closely resembles the legitimate Roundcube interface. Any credentials entered on this fake page are immediately transmitted to cybercriminals.

How Scammers Exploit Stolen Information

After harvesting victims' credentials, the perpetrators may engage in several malicious actions, including:

Account Compromise and Data Theft

• Accessing personal emails, private correspondence, and sensitive data.
• Collecting additional login details for other online services through password reuse.

Further Criminal Activity

• Using hijacked accounts to send spam, distribute malware, or propagate new phishing attacks.
• Selling stolen credentials and personal data on dark web marketplaces.

The misuse of stolen information could lead to identity theft, financial loss, or unauthorized access to social media, cloud storage, or banking platforms.

Common Tactics Used in Email-Based Threats

Cybercriminals frequently distribute phishing and malware-laced messages that rely on social engineering and user negligence. In this particular campaign, malicious actors use links to fraudulent websites; however, other threats may involve harmful attachments as well.

Typical Malware Delivery Methods Include:

• Executable files, Office documents with macros, PDFs, and scripts.
• Compressed archives (ZIP, RAR) containing hidden malicious files.
• Links redirecting to compromised or fake sites that attempt automatic malware downloads.

These methods often depend on user interaction — such as opening an attachment or enabling macros — to initiate infection.

Staying Safe from Email Scams

Users should be extremely cautious when receiving unsolicited or alarming messages about account security or updates. Verifying the legitimacy of any communication directly with the service provider is crucial before clicking links or entering credentials.

Key Recommendations:

• Ignore and delete suspicious messages requesting urgent verification or login confirmation.
• Avoid interacting with links or attachments from untrusted sources.
• Check email sender details carefully and look for inconsistencies in domain names.
• Enable two-factor authentication (2FA) for email accounts whenever possible.

By staying vigilant and skeptical of unexpected account-related alerts, users can effectively avoid falling victim to phishing schemes like the Closing All Roundcube Version Users Without DNS Scam.