Find the attackers already inside your storage
Bucket policies and ACLs don't tell you what's actually happening at request level. reCost analyzes S3 access log behavior to surface exfiltration patterns, credential abuse, EOL SDKs with CVEs, and anomalous access, before you find out from a breach notification.
Book a DemoS3 security tools check policies. Attackers bypass policies.
Policy scanners miss behavior
A valid IAM role with correct permissions can still exfiltrate data. CSPM tools check configuration, not whether a principal is actively abusing its access right now.
EOL SDKs are a silent threat
End-of-life Python, Java, and Node.js SDKs with active CVEs are still making millions of requests to production buckets. Nobody has a view of which SDK versions are touching what.
Credential attacks are invisible
403 storms, repeated auth failures, and cross-account probing are visible in S3 access logs, but nobody is analyzing them at scale. GuardDuty catches some, but misses the slow and subtle patterns.
Behavioral threat detection at the S3 request layer
reCost reads your S3 access logs without touching your data. It correlates request patterns across all principals, buckets, and prefixes to surface signals that policy scanners and CloudWatch alarms were never designed to catch.
- EOL SDK detection mapped to published CVEs and affected buckets
- Exfiltration pattern detection: high-volume GetObject spikes by unfamiliar principals
- Credential attack signatures: 403 storms, auth failures, brute-force timing patterns
- Bucket configuration change feed correlated with access anomalies
- PII path exposure detection in object key naming patterns
- Browser user-agent alerts for non-programmatic access to data buckets
- Cross-account access mapped to assuming principals and their behavior
Read-only. Metadata only. No data exposure.
reCost never reads your object contents. All signals are derived from S3 access log metadata: who, when, what operation, what response code, and how much. Your data stays in your account. We analyze the behavior, not the bytes.
We had an EOL Lambda runtime making 2.3 million requests per month to our most sensitive bucket. GuardDuty didn't flag it. reCost found it in the first week.
Start with proof,
not a pitch.
Scoped read-only role, 30-day lookback, results in 48 hours.