Skip to main content

Source we aggregate

isMalicious + AlienVault OTX

Open threat exchange community platform. isMalicious consumes this source and correlates it with others. Here is what that adds, and when to go direct.

Run a free reportView pricingFree tier · no credit card

AlienVault OTX is one of the sources isMalicious aggregates

We do not replace AlienVault OTX. Rows where isMalicious shows a capability AlienVault OTX lacks mostly come from the aggregation layer; for AlienVault OTX’s core use case, use AlienVault OTX directly.

Quick verdict

Choose isMalicious for API-first threat intelligence with multi-source correlation, CVE data, and ransomware tracking. Choose AlienVault OTX for free community threat intelligence sharing and research.

isMalicious

Threat intelligence API with multi-source correlation, CVE data and ransomware leak-site tracking.

Best for: Automated threat intelligence at scale

AlienVault OTX

AlienVault OTX (Open Threat Exchange) is a community platform where researchers share threat data as "pulses". It gives free access to a large volume of community-submitted IOCs.

Best for: Free community threat intelligence sharing and research

Feature comparison

FeatureisMaliciousAlienVault OTX
IP reputation
Domain reputation
URL reputationPartial
Multi-source correlation with confidence scoring
Ransomware leak-site tracking
CVE intelligence (CVSS, EPSS, KEV)
Streaming threat feed
STIX/TAXII export
NRD feed
Bulk APILimited
Free tier available

Check this table against your own indicators.

Run a free report

AlienVault OTX: strengths and limitations

Strengths
  • Free community IOC sharing
  • Large contributor base
  • STIX/TAXII export
  • Integration with AT&T/USM products
Limitations
  • Community-sourced = variable quality and high false positive rate
  • No confidence scoring or source reliability weighting
  • No CVE-to-IOC correlation
  • No ransomware group tracking
  • No dark web monitoring
  • No NRD feed
  • API rate limits on free tier
  • Inconsistent freshness — some pulses years old

Pricing

isMalicious

Free: website lookups with no monthly cap and 250 API calls a month. Pro from €99/month. Enterprise custom pricing.

View pricing →

AlienVault OTX

Free community access; AT&T USM enterprise products vary

Frequently asked questions

Is isMalicious better than AlienVault OTX?

isMalicious ingests OTX as one of its configured sources, weights it by reliability and correlates it with Spamhaus, CISA KEV and Google Safe Browsing into one confidence-scored verdict. OTX returns the raw community pulses.

Does isMalicious include OTX data?

Yes. AlienVault OTX is one of the community-sourced feeds included in the isMalicious correlation engine, weighted alongside higher-reliability professional sources to produce a balanced verdict.

Can I replace OTX with isMalicious?

For API-driven threat enrichment in automated pipelines, isMalicious provides higher quality (confidence-scored, multi-source correlated) data than raw OTX community pulses. If you specifically need community IOC sharing or the social/collaboration features of OTX, those are unique to that platform.

Other comparisons

isMalicious vs VirusTotalisMalicious vs AbuseIPDBisMalicious vs GreyNoiseisMalicious vs ShodanisMalicious vs urlscan.ioisMalicious vs IPQualityScoreisMalicious vs CensysisMalicious vs IPinfoisMalicious vs Criminal IPisMalicious vs SecurityTrailsisMalicious vs PulsediveisMalicious vs Cisco TalosisMalicious vs URLhausisMalicious vs SpamhausisMalicious vs Hybrid AnalysisisMalicious vs ANY.RUNisMalicious vs Cloudflare Radar

Decide with your own data

Don't take our word over AlienVault OTX's. Check something real.

Paste an IP, domain or URL: reputation, WHOIS, DNS, ransomware signals and an AI-generated assessment. Free, no signup.

  • 250 free API calls/month
  • No credit card required
  • API key in under 2 minutes
Get a free API keyView pricing
API docsAlienVault OTX alternative guide