PenScan vs Acunetix

Acunetix is a single, highly refined DAST engine with Proof-Based Scanning that verifies findings before surfacing them. PenScan runs seven independent tools concurrently — OWASP ZAP, Nuclei, Wapiti, Nikto, SSLyze, Nmap, and Dalfox — and merges results. The multi-scanner approach prioritises breadth and cross-tool coverage; Acunetix prioritises precision and verified exploitability. Teams with high false-positive sensitivity tend to favour Acunetix; teams that want broad coverage across vulnerability classes tend to find the multi-scanner approach more thorough.

PenScan currently scans externally accessible surfaces. It does not support authenticating with a username and password to scan behind a login wall. Acunetix supports authenticated scans, which is important for applications where most functionality — and therefore most risk — exists in the logged-in state.

Acunetix has purpose-built REST, SOAP, and GraphQL API testing, including schema-aware scanning. PenScan tests API endpoints it discovers during a combined scan using ZAP and Wapiti — this catches common injection and exposure issues in APIs but doesn't replicate dedicated schema-driven API testing. If API security is the primary concern, Acunetix's dedicated API scanning is more suitable.

Proof-Based Scanning, a term trademarked by Invicti/Acunetix, means the scanner automatically constructs and executes a proof-of-concept exploit for each finding before reporting it — only confirmed exploitable vulnerabilities appear in results. PenScan surfaces all detected indicators across seven scanners and uses cross-tool corroboration to increase confidence. Findings that appear in multiple scanners (e.g., both ZAP and Wapiti detect the same SQLi point) carry higher confidence. PenScan does not produce automated proof-of-concept exploits.

Yes. Some teams use a self-serve tool like PenScan for routine broad coverage — especially for new targets, release cycles, and certificate generation — and Acunetix or similar enterprise DAST for deep, authenticated testing on critical applications. The tools serve different operational roles rather than being mutually exclusive.