Stay secure with the latest email security updates, best practices, and threat alerts to protect your inbox and sensitive information.
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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.
Are you a good bot or a bad bot? More than 30 malicious Chrome extensions installed by at least 260,000 users purport to be helpful AI assistants, but they steal users' API keys, email messages, and other personal data. Even worse: many of these are still available on the Chrome Web Store as of this writing.…
Bitwarden has launched a new system called 'Cupid Vault' that allows users to safely share passwords with trusted email addresses. [...]
A set of 30 malicious Chrome extensions that have been installed by more than 300,000 users are masquerading as AI assistants to steal credentials, email content, and browsing information. [...]
SmarterTools confirmed last week that the Warlock ransomware gang breached its network after compromising an email system, but did not impact business applications or account data. [...]
Database Misconfiguration Exposed 1.5 million API TokensA misconfigured database at Moltbook, the viral social network for AI agents, exposed 1.5 million API authentication tokens, 35,000 email addresses and private messages. Security researchers discovered unauthenticated read and write access to all platform data within days of launch.