5 email security trends from 2025 · Blog · Sublime Security
ID: 7a88db0d-3682-5847-94a6-ae642054c836
STIX ID: report--7a88db0d-3682-5847-94a6-ae642054c836
Feed Name: Sublime Security Blog
Threat Score
Preview of a 2026 email security report that highlights major 2025 trends: a ~22x surge in malicious calendar/ICS phishing, a shift toward behavioral evasion tactics in malware campaigns, a ~300% increase in QR-code phishing, growing abuse of smaller "Living Off Trusted Sites" providers, and very large email-bomb attacks (one observed >10,000 messages). The post is a telemetry-driven overview intended to raise awareness and point readers to the full report and remediation resources.
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