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GainSec

Where OSINT, Hacking, Penetration Testing, Privacy, Piracy, Information Security, Cyber Security and Law are a lifestyle.

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Category: Operations Security

How to generate *VALID* TLS Certificates that are *NOT* self-signed for internal only services.

Step by step instructions on how to easily use Caddy and Cloudflare to generate valid TLS certificates on the fly for services only exposed internally. No self-signing, importing CAs, cleartext HTTP, browser warnings or hassle ever again!

gainsec Infrastructure, Internet Hygeine, Lab, Operations Security, OpSec, Technical Walkthroughs Leave a comment May 31, 2025August 1, 2026

Top 5 ways to harden the security and privacy of your online accounts in 2022

The current top 5 ways to harden the security and privacy of your online accounts straight from a cyber security expert!

gainsec Cybersecurity, Internet Hygeine, Operations Security, Privacy, Technical Walkthroughs Leave a comment January 2, 2022August 1, 2026

Top 5 ways to harden the security and privacy of your online accounts in 2021

The current top 5 ways to harden the security and privacy of your online accounts straight from a cyber security expert!

gainsec Cybersecurity, Internet Hygeine, Operations Security, Privacy, Technical Walkthroughs Leave a comment April 18, 2021August 1, 2026

The importance of Operations Security (OpSec) #4

Sales list and e-mail list of a cryptocurrency wallet vendor breached and leaked?!

gainsec Everything Else, Operations Security Leave a comment December 22, 2020August 1, 2026

The importance of Operation’s Security 2020

Operations security (OpSec) is UBER important. Whether you're on the blue, red, purple team. Whether you wear a white, gray or black hat!

gainsec Cybersecurity, Ethical Hacking, Hacking, Lectures and Publications, Operations Security, Penetration Testing, Red Teaming, Security Research, Whitehat Hacking Leave a comment November 18, 2020August 1, 2026

The importance of Operations Security (OpSec) #3

Another reminder of how important OpSec is!

gainsec Everything Else, Operations Security Leave a comment September 28, 2020August 1, 2026

5 Internet Hygiene Tips

5 Quick Tips to have good internet hygiene!

gainsec Internet Hygeine, Operations Security, OpSec, Technical Walkthroughs Leave a comment September 24, 2020August 1, 2026

Technique, Tool and Lecture (TTL) #20

You NEED to watch this lecture for your own OpSec and privacy!

gainsec Everything Else, Information Security, Operations Security, OpSec Leave a comment July 30, 2020August 1, 2026

The importance of Operation Security #2

Another lesson to teach you about the importance of Operation Security!

gainsec Everything Else, Operations Security, OpSec, Uncategorized Leave a comment May 29, 2020August 1, 2026

Internet Hygiene Faraday Bags #4

Fourth entry of the best practices for keeping your internet hygiene and Operations Security under control!

gainsec Everything Else, Internet Hygeine, Operations Security, OpSec Leave a comment March 15, 2020August 1, 2026

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