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Background for this topic.
Email is a system for exchanging digital messages, typically using mail servers and clients over a network. In security, it includes both the messages and the accounts, servers, domains, and authentication mechanisms that handle them. Email commonly carries phishing links, malicious attachments, and fraudulent requests for payments or credentials; compromised accounts can also be used to impersonate trusted people and conduct further attacks.
Defenses include filtering and malware scanning, phishing-resistant multifactor authentication, careful handling of links and attachments, and monitoring for unusual login or sending activity. Domain controls such as SPF, DKIM, and DMARC help receiving systems detect messages that are forged or sent without authorization, while encryption protects message contents in transit or at rest when correctly implemented. Security teams should preserve relevant headers and mailbox activity so suspicious messages can be investigated, removed, and used to identify affected accounts and other recipients.
Half of cybersecurity leaders lack confidence in detecting threats on Slack, Teams and other non-email platforms, despite growing attacker focus
FortiBleed: Admin Passwords for 75,000 Fortinet Firewalls Are Out in the Wild. Half the Internet-Facing Fortinets on the Planet. Security researcher Bob Diachenko found a server sitting open on the internet containing what appeared to be valid Fortinet VPN credentials, including usernames, email addresses, and plaintext passwords for tens of thousands of organizations. He posted […]
A French-speaking attacker broke into a small French automotive business, planted a keylogger, and stole banking and email credentials
Threat Actor Silently Forwarded Sensitive Emails Matching Strategic TopicsGoogle says Chinese espionage group UNC6508 compromised REDCap environments at North American research institutions, deployed custom malware, stole credentials and covertly forwarded strategically relevant emails through abused compliance rules to support long-term intelligence collection.
The North Korean state-sponsored hacking group known as ScarCruft (aka APT37) has been observed using spear-phishing messages impersonating Microsoft Account security notifications to deliver a new malware called NarwhalRAT
A China-linked espionage group hid inside North American medical, academic, and military research networks for more than a year, quietly stealing sensitive research and defense email
Modern phishing, BEC, and account takeover attacks increasingly bypass traditional email defenses and create operational strain for security teams. This webinar explores how behavioral AI can help automate detection, investigation, and remediation to reduce alert fatigue and accelerate response times. [...]
Employee onboarding is a busy time for IT teams. New starters need devices, accounts, access permissions, and passwords, all delivered within a tight timeframe
A new round of the weekly Security Affairs newsletter has arrived! Every week, the best security articles from Security Affairs are free in your email box. Enjoy a new round of the weekly SecurityAffairs newsletter, including the international press. Washington Pulled the Plug on Anthropic ‘s Fable 5 and Mythos 5 models. The Rest of […]