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Bleeping Computer
Microsoft is investigating an Exchange Online false positive issue causing emails containing images to be wrongly tagged as malicious and sent to quarantine. [...]
The Hacker News
Cybersecurity researchers have disclosed details of security flaws in the Roundcube webmail software that could be exploited to execute malicious JavaScript in a victim's web browser and steal sensitive information from their account under specific circumstances. "When a victim views a malicious email in Roundcube sent by an attacker, the attacker can execute arbitrary JavaScript in the victim's
The Register
A simple HTML change and the warning is gone! Researchers say cybercriminals can have fun bypassing one of Microsoft's anti-phishing measures in Outlook with some simple CSS tweaks.…
Dark Reading
A simple toggle in Proofpoint's email service allowed for brand impersonation at an industrial scale. It prompts the question: Are secure email gateways (SEGs) secure enough?
The Register
They DKIM here, they DKIM there A huge phishing campaign exploited a security blind-spot in Proofpoint's email filtering systems to send an average of three million "perfectly spoofed" messages a day purporting to be from Disney, IBM, Nike, Best Buy, and Coca-Cola – all of which are Proofpoint customers.…
Bleeping Computer
A massive phishing campaign dubbed "EchoSpoofing" exploited a security gap 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 Hacker News
An unknown threat actor has been linked to a massive scam campaign that exploited an email routing misconfiguration in email security vendor Proofpoint's defenses to send millions of messages spoofing various legitimate companies. "These emails echoed from official Proofpoint email relays with authenticated SPF and DKIM signatures, thus bypassing major security protections — all to deceive
The Register
Plus: US auto dealers still offline; Conti coders sanction; Rabbit R1 hardcoded API keys; and more It took a while, but Microsoft has told customers that the Russian criminals who compromised its systems earlier this year made off with even more emails than it first admitted. … security in brief
Graham Cluley
More of Microsoft's clients are being warned that emails they exchanged with the company were accessed by Russian hackers who broke into its systems and spied on staff inboxes. Read more in my article on the Hot for Security blog.
Bleeping Computer
A new phishing campaign uses HTML attachments that abuse the Windows search protocol (search-ms URI) to push batch files hosted on remote servers that deliver malware. [...]