12 May, 2026

Over 10,000 Zimbra servers vulnerable to ongoing XSS attacks

Over 10,000 Zimbra Collaboration Suite (ZCS) instances exposed online are vulnerable to ongoing attacks exploiting a cross-site scripting (XSS) security flaw, according to nonprofit security organization Shadowserver. Zimbra is a popular email and collaboration software suite used by hundreds of millions of people worldwide, including hundreds of government agencies and thousands of businesses. The vulnerability (tracked as CVE-2025-48700) […]

2 mins read

New ATHR vishing platform uses AI voice agents for automated attacks

A new cybercrime platform called ATHR can harvest credentials via fully automated voice phishing attacks that use both human operators and AI agents for the social engineering phase. The malicious operation is advertised on underground forums for $4,000 and a 10% comission from profits, and can steal login data for multiple services, including Google, Microsoft, […]

3 mins read

Google rolls out Gmail end-to-end encryption on mobile devices

Google says Gmail end-to-end encryption (E2EE) is now available on all Android and iOS devices, allowing enterprise users to read and compose emails without additional tools. Starting this week, encrypted messages will be delivered as regular emails to Gmail recipients’ inboxes if they use the Gmail app. Recipients who don’t have the Gmail mobile app […]

2 mins read

Microsoft fixes Classic Outlook bug causing email delivery issues

Microsoft has resolved a known issue that was preventing some Classic Outlook users from sending emails via Outlook.com. As the company explained when it acknowledged the issue last week, affected users were being warned that some of their messages hadn’t reached intended recipients. Microsoft said that those experiencing this issue would encounter it more often when […]

2 mins read

Microsoft links Classic Outlook issue to email delivery problems

Microsoft is investigating a known issue that prevents some Classic Outlook users from sending emails via Outlook.com. Affected users are being warned that their message hasn’t reached some intended recipients, and they will encounter this problem more often when the Outlook.com account they use to send email is an Outlook profile linked to another Exchange […]

2 mins read

Microsoft still working to fix Exchange Online mailbox access issues

Microsoft is investigating and working to resolve Exchange Online mailbox access issues that have intermittently affected Outlook mobile and macOS users for weeks. When it first acknowledged this service issue (tracked under EX1256020) last week, Microsoft said the root cause was a newly introduced virtual account. While the company flagged it as resolved on April 1, […]

2 mins read