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.
Microsoft has upgraded its AI-powered Copilot digital assistant to connect to email accounts and generate Office documents from prompt outputs. [...]
Williams & Connolly Hit in Zero-Day Campaign Impacting Client EmailsA zero-day vulnerability was used to breach email accounts at the elite D.C. law firm Williams & Connolly, with officials reportedly suspecting the hack is part of a China-linked campaign targeting the U.S. legal sector to support espionage, steal intelligence and establish long-term access routes.
Microsoft is enabling threshold-based auto-archiving by default in Exchange Online to prevent email flow issues caused by mailboxes filling up faster than expected. [...]
Email Security Acquisition Aims to Bring Cross-Platform Data to Phishing DefenseKaseya’s acquisition of Inky reflects the need for broader platform integration in email security. With phishing attacks becoming more subtle, founder and CEO Dave Baggett says access to login data and other platform signals is critical for threat detection.
Researchers report an increase in the use of hidden content in spam and malicious email to confuse filters and other security mechanisms.
2020 Hack Has Cost EyeMed About $12.6M in Multiple Regulatory Fines, SettlementsBenefits provider EyeMed Vision Care has agreed to pay $5 million and improve its security practices to settle class action litigation involving a 2020 phishing breach. The incident has been the subject of previous multimillion dollar settlements and enforcement actions by multiple state regulators.