Text Salting Technique Bypasses AI Email Filters in Phishing Campaigns

Since April 2026, over 1 million phishing emails have been detected using a technique called text salting to evade AI-powered email security filters. This method involves embedding benign text within malicious emails to confuse automated scanning systems, allowing harmful content to reach users. Barracuda Networks reported that these emails often promise rewards and use urgent language to entice clicks. The hidden text is not visible to human readers but successfully misleads AI systems that analyze email content. Traditional email security measures have struggled against this tactic, which has resurfaced despite advancements in technology. The attackers manipulate HTML code, making it difficult for security gateways to detect spam signals effectively. The ongoing use of this technique highlights vulnerabilities in current AI-driven email defenses.

Key Points: • Over 1 million phishing emails using text salting have been detected since April 2026. • Text salting involves embedding benign text in emails to confuse AI-powered filters. • Current AI email security systems struggle to detect these hidden threats effectively.