Hackers exploit Roundcube webmail flaw to steal email, credentials
Threat actors have been exploiting a vulnerability in the Roundcube Webmail client to target government organizations in the Commonwealth of Independent States (CIS) region, the successor of the former Soviet Union. An attack was discovered by Russian cybersecurity company Positive Technologies in September, but the researchers determined that the threat actor activity had started in […]
Microsoft Outlook bug blocks email logins, causes app crashes
Microsoft is investigating an Outlook bug causing desktop app crashes, high system resource usage, and preventing users from logging into their accounts. While the company said these ongoing issues only affect European customers, users worldwide have since reported experiencing the same sign-in and app instability problems. “We’re investigating an issue in which users in Europe may be experiencing crashing, not […]
Critical Zimbra RCE flaw exploited to backdoor servers using emails
Hackers are actively exploiting a recently disclosed RCE vulnerability in Zimbra email servers that can be triggered simply by sending specially crafted emails to the SMTP server. The Zimbra remote code execution flaw is tracked as CVE-2024-45519 and exists in Zimbra’s postjournal service, which is used to parse incoming emails over SMTP. Attackers can exploit the […]
Microsoft: Exchange Online mistakenly tags emails as malware
Microsoft is investigating an Exchange Online false positive issue causing emails containing images to be wrongly tagged as malicious and sent to quarantine. “Users’ email messages containing images may be incorrectly flagged as malware and quarantined,” Microsoft said in a service alert posted on the Microsoft 365 admin center two hours ago. “We’re reviewing service monitoring telemetry […]
Proofpoint settings exploited to send millions of phishing emails daily
A massive phishing campaign dubbed “EchoSpoofing” exploited now-fixed, weak permissions in Proofpoint’s email protection service to dispatch millions of spoofed emails impersonating big entities like Disney, Nike, IBM, and Coca-Cola, to target Fortune 100 companies. The campaign started in January 2024, disseminating an average of 3 million spoofed emails daily and reaching a peak of 14 […]
New phishing tactic hijacks email protections to mask links
Email security company Barracuda exposed a recent phishing campaign that uses legitimate URL protection services to mask malicious email links. The new phishing tactic was revealed in a Barracuda blog post Monday, and has been leveraged in attacks beginning around mid-May 2024. The attacks take advantage of the legitimacy of URL protection services used by […]