SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/tech-siem-correlation

What does a SIEM add beyond collecting log files?

It can correlate many sources and identify significant events.

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  1. Permanent anonymity
  2. Cross-source analysis ✔
  3. Automatic data backups

Why: Central analysis can connect weak signals that look harmless alone, such as a login anomaly followed by unusual database access. Monitoring turns stored records into timely detection.

Huh, didn't know that: Normalization maps different vendor log formats into fields that can be compared.

The dad joke
The SIEM introduced two logs and discovered they had an event in common.
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References

Answer: Cross-source analysis. Central analysis can connect weak signals that look harmless alone, such as a login anomaly followed by unusual database access. Monitoring turns stored records into timely detection.

  1. NIST SP 800-92 nvlpubs.nist.gov/nistpubs/legacy/SP/nistspecialpublication800-92.Pdf
    SIEM products can analyze data from many sources, identify significant events, and initiate automated responses if desired.
    Checked 2026-10-10.

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