Using the SBL and XBL against spamvertized URLs
ID: cbf2ef5d-b7a0-5a81-a5fb-5b3b2f67772b
STIX ID: report--cbf2ef5d-b7a0-5a81-a5fb-5b3b2f67772b
Feed Name: The Spamhaus Project
**Executive summary:** This guidance recommends using the SBL or SBL+XBL DNS blacklists to check URLs embedded in email bodies to identify spamvertised websites, warns against using ZEN because PBL entries can cause false positives for web/DNS hosts, and notes improved detection of fast-flux hosting when XBL is added; it also references common integrations like SpamAssassin/URIBL_SBLXBL.
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