Onizuka

10 min read

Onizuka

Oct 8

Would You Trust SMTP 250 OK? 12 of 50 Emails Bounced Anyway.

10 min read

Onizuka

Oct 8

I Sent 50 Emails. 12 Bounced Despite SMTP 250 OK.

9 min read

Onizuka

Oct 8

I Validated 50 Emails. SMTP Said 250 OK. 24% Still Bounced

12 min read

Onizuka

Oct 6

SMTP 250 OK Is Not Validation. 24% of My Verified Emails Bounced

10 min read

Onizuka

Oct 6

I built an AI agent to screen 500 names against OFAC. 12 failed.

#agents #ai #api #security

9 min read

Onizuka

Oct 4

I Trusted SMTP 250 OK And Got A 24% Bounce Rate

10 min read

Onizuka

Oct 1

I tested 500 emails against HIBP. My validator found a major flaw.

#api #python #security #testing

11 min read

Onizuka

Oct 1

I Verified 5,000 Emails. SMTP Said OK, 24% Still Bounced.

10 min read

Onizuka

Sep 29

I ran 5,000 emails through an MX check. 40% were disposable.

11 min read

Onizuka

Sep 26

I Validated 10,000 Emails. The Greylisting Rate Shocked Me.

9 min read

Onizuka

Sep 26

I Ran 1,000 Names Through 2 OFAC APIs. 80 Hits Disagreed.

#api #cybersecurity #security

11 min read

Onizuka

Sep 24

12 of 50 emails bounced after SMTP 250 OK. Do you still trust it?

9 min read

Onizuka

Sep 22

SMTP 250 OK Lied. 12 of 50 Verified Emails Bounced Anyway.

10 min read

Onizuka

Sep 22

I Sent 50 Emails After 250 OK. 24% Still Bounced.

#api #backend #testing

12 min read

Onizuka

Sep 20

Exact Match Or Fuzzy Logic For OFAC? 1,400 Tests Changed My Mind.

10 min read

Onizuka

Sep 19

I Sent 50 Emails And Got 12 Bounces. SMTP 250 Failed Me.

#api #cybersecurity #python

11 min read

Onizuka

Sep 14

I Ran 500 OFAC Checks Unsupervised. It Missed 3 Real Hits.

#ai #automation #cybersecurity #security

3

9 min read

Onizuka

Sep 13

I Ran 50 SMTP 250 OK Checks. 12 Bounced Despite 250 OK.

10 min read

Onizuka

Sep 4

I Ran 1,000 Email Validations Against HIBP. 47 Were Breached.

#api #cybersecurity #security

9 min read

Onizuka

Aug 23

Manual OFAC Screening Is Dead After Siemens Water Plant Hack

10 min read

Onizuka

Aug 23

I Ran 3 AI Labs Through the Company Info API. 1 Stood Out.

9 min read

Onizuka

Aug 22

I Ran 300K Company API Lookups. 40K Hit Military Bases.

#discuss #api #cybersecurity #security

10 min read

Onizuka

Aug 18

I Ran 1,400 WHOIS Lookups. 18 Domains Were Compromised.

#api #cybersecurity #python #security

7

8 min read

Onizuka

Aug 15

I Ran 50 Emails Through AI Agents. 12 SMTP Bounces Hit.

#agents #ai #automation #sideprojects

4

8 min read

Onizuka

Aug 11

IP Geolocation Is Wrong — Why VPN Detection Fails 90% Of Us

#cybersecurity #networking #security

6 min read

Onizuka

Aug 10

My Bot Wrote 13 dev.to Articles - Here's What Actually Got Views

#discuss #ai #beginners #sideprojects

6 min read

Onizuka

Aug 10

I Built an MCP Server for Domain Investigation - 5 Security Gotchas I Hit

#security #ai #api #cybersecurity

8 min read

Onizuka

Aug 10

12 Domain WHOIS APIs I Evaluated — Here's What I Learned

#security #osint #api #python

3

5 min read

Onizuka

Aug 9

I Built an IP Geo Phone Server — 5 Things I Actually Used

#api #python #sideprojects

8 min read

Onizuka

Aug 8

5 Free Python Security APIs That Cut Your Due Diligence Time

#api #python #security #webdev

8 min read

Onizuka

Aug 7

I Hit 50 Company APIs — Here's What I Learned About AMD

#ai #api #python #startup

7 min read

Onizuka

Aug 6

I Did 52 WHOIS Security Lookups — Here's What I Learned

#api #cybersecurity #whois #python

7 min read

Onizuka

Aug 5

I Used IP Geo API to Block 1,000 VPNs — Here's What I Learned

#webdev #cybersecurity #vpn #python

5 min read

Onizuka

Aug 4

I Audited 500 WHOIS API Endpoints - Here's What I Learned

#security #osint #api #python

6 min read

Onizuka

Aug 3

3 Free AI API Cybersecurity Agents That Find Mobile Risks

#ai #api #cybersecurity #mobile

6 min read

Onizuka

Aug 2

I Used 5 Free IP Geolocation APIs — Here's What I Learned

#security #cybersecurity #api #python

5 min read

Onizuka

Aug 1

I Built 3 AI KYC Tools With LLMs — Here's What I Learned

#ai #fintech #llm #api

5 min read

Onizuka

Jul 31

3 Free API Scripts That Find Subdomain Takeover Security Flaws

#api #automation #cybersecurity #security

5 min read

Onizuka

Jul 26

5 Free Finance APIs That Boost Your AI Stock Pool Models

#api #python #finance #ai

5 min read

Onizuka

Jul 26

I Built 3 Free IP Geolocation APIs — Here's What I Learned

#security #cybersecurity #api #python

6 min read

Onizuka

Jul 17

5 Free APIs I Built With AI — Shipped On RapidAPI In A Weekend

#api #sideprojects #vibecoding #rapidapi