DSPM tells you what's in your buckets. reCost tells you who's stealing it. Behavior-based threat detection from S3 access logs: EOL SDKs, exfiltration patterns, credential attacks, and PII exposure.
Third parties use vulnerable SDKs
boto3 1.18.x with active CVEs is making 14K requests per month to your PII bucket, and your CSPM doesn't know.
Exfiltration looks like normal traffic
3.2 GB downloaded by a known role to a new IP isn't flagged because the role had access. Behavior is invisible without a baseline.
PII sits in object paths nobody scans
Email addresses, SSNs, account numbers in object keys never reach DSPM classifiers, they're visible in S3 access logs.
"Compliance scans config. reCost watches actual behavior. That caught something we'd missed for 200 days."
Head of Infrastructure Security
SaaS, $200M ARR
How a security team discovered a third-party integration running boto3 1.9.x (CVE-2018-15869) making 14K monthly requests to their PII bucket, undetected for over six months.
5-minute setup. No agents. Behavior-based, not config-based.
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