Proton worldwide outage caused by Kubernetes migration, software change
Swiss tech company Proton, which provides privacy-focused online services, says that a Thursday worldwide outage was caused by an ongoing infrastructure migration to Kubernetes and a software change that triggered an initial load spike. As the company revealed yesterday in an incident report published on its status page, the outage started around 10:00 AM ET. Proton users […]
Proton Mail still down as Proton recovers from worldwide outage
Privacy firm Proton suffered a massive worldwide outage today, taking down most services, with Proton Mail and Calendar users still unable to connect to their accounts. The outage started at approximately 10:00 AM ET, with Proton users unable to connect to their accounts, including ProtonVPN, Proton Mail, Proton Calendar, Proton Drive, Proton Pass, and Proton […]
Microsoft 365 Admin portal abused to send sextortion emails
The Microsoft 365 Admin Portal is being abused to send sextortion emails, making the messages appear trustworthy and bypassing email security platforms. Sextortion emails are scams claiming that your computer or mobile device was hacked to steal images or videos of you performing sexual acts. The scammers then demand from you a payment of $500 […]
Microsoft pulls Exchange security updates over mail delivery issues
Microsoft has pulled the November 2024 Exchange security updates released during this month’s Patch Tuesday because of email delivery issues on servers using custom mail flow rules. The company announced it pulled the updates from Windows Update and the Download Center following widespread reports from admins saying that email had stopped flowing altogether. This issue affects customers using transport rules (also known […]
Microsoft Exchange adds warning to emails abusing spoofing flaw
Microsoft has disclosed a high-severity Exchange Server vulnerability that allows attackers to forge legitimate senders on incoming emails and make malicious messages a lot more effective. The security flaw (CVE-2024-49040) impacts Exchange Server 2016 and 2019, and was discovered by Solidlab security researcher Vsevolod Kokorin, who reported it to Microsoft earlier this year. “The problem is that […]
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 […]