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xorlab Security Platform classifies every email with a final verdict. Verdicts range from benign to malicious and—along with their confidence—are the basis of the actions taken as a part of the Inbound Email Security. Verdicts are also used by analysts to classify reported emails as a part of the Abuse Mailbox Automation. This page lists and describes all available verdicts in xorlab Security Platform.
Verdict searchYou can search for the verdicts listed here with the verdict: keyword as described in Search.

Malicious verdicts

The following table shows all malicious verdicts.

Additional verdicts for reported emails

The following additional verdicts can be used when resolving reported emails:

Benign verdicts

A benign verdict does not necessarily mean that the email is 100% benign. Benign verdicts are applied when no malicious verdict could be derived. Based on the positive indicators in the email (e.g., trust), a more significant (trustworthy) benign verdict is chosen.

Reputation and trust-based verdicts

Verdicts that are based on reputation or trust are usually the most trustworthy benign verdicts.

Others

All other benign verdicts are based on certain indicators found in the email, but do not necessarily mean that the email is benign.

Additional verdicts for reported emails

The following additional verdicts can be used when resolving reported emails:

Verdict precedence

After analysis, XSP assigns a single final verdict to each email. This verdict is determined first based on its confidence (high, medium, or low), and then on its specificity. The final verdict controls which action (e.g., deliver with a subject rewrite or quarantine the email) is taken on the email. Confidence: All high-confidence verdicts and verdicts without confidence have priority over all medium-confidence verdicts. And all medium-confidence verdicts have priority over all low-confidence verdicts. Specificity: More specific verdicts have priority over more generic verdicts. Concretely, this is the now-enforced list of verdicts in order of precedence: Simulation > Whitelist > Blacklist > Filter > Airlock > Exploit > Malware > BEC > Extortion > VIP Fraud > Impersonation > Phishing > Spam. For example, if an email is determined to be Spam with high confidence, but also as Phishing with high confidence, the final verdict will be high-confidence Phishing. This is due to Phishing being a more specific verdict than Spam. If instead the email is only considered Phishing with medium confidence, then the final verdict would be high-confidence Spam because higher-confidence verdicts have precedence over lower-confidence verdicts.

Rule priorities

The rules that determine the final verdict and decision are evaluated in a fixed priority order. The order applies to emails and reported emails, as well as for all email directions.
The priority values of the built-in decision rules are documented in Detection Defaults → Rule priorities. Password required.