BI.ZONE Mail Security 3.0 Enhances Detection of Password-Protected Archives and Spam Variants
BI.ZONE has released Mail Security 3.0, adding new detection mechanisms for email threats and expanded administrative capabilities. The solution now pays closer attention to password-protected archives, verifies sender authenticity, and identifies mass mailings in which attackers make minor text changes to bypass filters.
When the contents of a password-protected archive, including nested files, cannot be extracted, the system assigns additional risk points to the message. The archive itself is not automatically marked as malicious, but it loses its previous immunity simply because its contents are locked. This approach allows analysts to investigate suspicious encrypted attachments without false negatives caused by encryption.
A second new method compares message texts and detects series of nearly identical emails. BI.ZONE uses this technique to uncover spam campaigns where threat actors rearrange a few words in an attempt to evade detection. Delivery rules can now take into account the results of SPF and DKIM checks, helping to separate legitimate senders from those who spoof familiar names to steal credentials.
According to BI.ZONE statistics, phishing accounted for 90 percent of illegitimate email traffic in the first half of 2026. Protection for administrative accounts has been strengthened with a mechanism against automated password brute-force attacks. After a defined number of failed login attempts, users must complete a CAPTCHA challenge.
Administrators can now enable, disable, or delete rules in bulk, download quick rules as a group, and perform operations on multiple messages simultaneously. The updated journal displays message information in a side panel, while a new Events section alerts users to important changes and upcoming license expiration. User activity logs can be forwarded to external monitoring and SIEM systems via Syslog.
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