Every vendor writes logs its own way, and an unparsed log cannot be searched. Eight parser types, from regex and JSON to C#, Python and database query, chain so the next tries when one fails. A helper builds a parser from a sample log, and ARRTECH writes one for unsupported sources under support. Windows event 4624 becomes successful login.

A log that cannot be shown unaltered proves nothing to an auditor or a court. Every write is hashed and signed, each file chains to the last, and a qualified timestamp authority stamps the chain daily. Any source exports with its signatures, certificate and a standalone verifier, so a third party can check it years later. A report flags faulty files.

An attack crosses vendors, and a rule per vendor misses the join. Correlation runs in memory on classified events, so one rule spans every source. Rules run on a sliding window, chain queries, or match each row as it arrives, catching a count, an absence or a sequence. A limiter suppresses duplicates, and any alert can open a case in ARRTECH SOAR.

Search syntax is muscle memory, and relearning it is a cost of switching SIEM. A base search selects sources, filters and groups. A pipe | passes the results to functions that reduce, enrich with lookups and geolocation, compute statistics and combine related events. Saved queries feed dashboards, scheduled reports and alerts. Ready reports cover PCI DSS, HIPAA, GDPR, SOX, NIST and ISO/IEC.

An alert says something happened. Proof needs the whole sequence. An AI module runs machine learning, deep learning and graph neural network models on an in-memory graph to find multi-step attacks. UEBA scores each user and entity on a risk timeline. A forensic module reconstructs the sequence of events and maps every connection, allowed and blocked.