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20 Free Security APIs Every Developer Should Know About (2026)

20 Free Security APIs Every Developer Should Know About (2026)

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3 min read
Post-quantum cryptography through PKCS#11 in a software HSM

Post-quantum cryptography through PKCS#11 in a software HSM

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5 min read
crt.sh Has a Free API — Find Every SSL Certificate for Any Domain

crt.sh Has a Free API — Find Every SSL Certificate for Any Domain

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3 min read
InternetDB Has a Free API — Shodan Data for Any IP in One Call (No Key Needed)

InternetDB Has a Free API — Shodan Data for Any IP in One Call (No Key Needed)

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3 min read
Rotifer v0.7.7-v0.7.8: Alignment + Test Fortification

Rotifer v0.7.7-v0.7.8: Alignment + Test Fortification

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4 min read
NVD Has a Free API — Search 250,000+ Vulnerabilities Programmatically

NVD Has a Free API — Search 250,000+ Vulnerabilities Programmatically

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4 min read
MITRE ATT&CK Has a Free API — Map Any Cyber Attack to Known Techniques

MITRE ATT&CK Has a Free API — Map Any Cyber Attack to Known Techniques

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4 min read
AlienVault OTX Has a Free API — Threat Intelligence From 200,000+ Contributors

AlienVault OTX Has a Free API — Threat Intelligence From 200,000+ Contributors

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3 min read
VirusTotal Has a Free API — Scan Files and URLs Against 70+ Antivirus Engines

VirusTotal Has a Free API — Scan Files and URLs Against 70+ Antivirus Engines

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4 min read
Secure by Design - Building Fortresses, Not Just Fixing Leaks

Secure by Design - Building Fortresses, Not Just Fixing Leaks

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3 min read
Shodan Has a Free API — Search Every Device Connected to the Internet

Shodan Has a Free API — Search Every Device Connected to the Internet

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4 min read
GreyNoise Has a Free API — See If an IP Is Scanning the Internet (Not Just You)

GreyNoise Has a Free API — See If an IP Is Scanning the Internet (Not Just You)

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4 min read
Cloudflare Radar Has a Free API — Get Internet Traffic Data for Any Country

Cloudflare Radar Has a Free API — Get Internet Traffic Data for Any Country

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3 min read
URLhaus Has a Free API — Check If Any URL Is Serving Malware

URLhaus Has a Free API — Check If Any URL Is Serving Malware

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2 min read
No Certs, No Secrets: Microsoft Graph on Azure using Entra Workload Identity Federation and Amazon Cognito (OIDC)

No Certs, No Secrets: Microsoft Graph on Azure using Entra Workload Identity Federation and Amazon Cognito (OIDC)

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5 min read
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