hackerfren's profile picture. Cybersec/AI expert | Hacker | Pilot | OSCE3, CISSP, CCNP, CSIE | CTF Reviews and Writeups | meme magic 🐸

Jacob Krell

@hackerfren

Cybersec/AI expert | Hacker | Pilot | OSCE3, CISSP, CCNP, CSIE | CTF Reviews and Writeups | meme magic 🐸

고정된 트윗

My first ever podcast appearance just went live. youtube.com/watch?v=tqVpHJ… We talked about my journey breaking into cybersecurity and my advice and wisdom for others. I would love it if you could let me know what you thought and drop a like on the video! I stand on the…

hackerfren's tweet card. 30 Certifications and Counting with Jacob Krell | Simply Offensive S2...

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30 Certifications and Counting with Jacob Krell | Simply Offensive S2...


Since AI agents can solve captchas now, and they are effectively rendered useless, can we please start to phase them out? I'm tired of selecting bikes and bridges over and over....

hackerfren's tweet image. Since AI agents can solve captchas now, and they are effectively rendered useless, can we please start to phase them out? 

I'm tired of selecting bikes and bridges over and over....

Happy Halloween everyone!

hackerfren's tweet image. Happy Halloween everyone!

Always a fun day when you get to break out Ghidra and do some reversing for my daily Hack the Box challenge. Virtually Mad is a medium difficulty reversing challenge created by 0xNinja, with 510 solves and a solid 4.3 community rating. Released 586 days ago, it awards 40 points…

hackerfren's tweet image. Always a fun day when you get to break out Ghidra and do some reversing for my daily Hack the Box challenge. 

Virtually Mad is a medium difficulty reversing challenge created by 0xNinja, with 510 solves and a solid 4.3 community rating. Released 586 days ago, it awards 40 points…

And that makes all the Active Hack the Box MISC challenges complete! only about 50 left overall, soon I'm going to have to double up with doing boxes daily to get that sweet 100% completion and top 50 globally rank back. Vipère is a medium difficulty Misc challenge created by…

hackerfren's tweet image. And that makes all the Active Hack the Box MISC challenges complete! only about 50 left overall, soon I'm going to have to double up with doing boxes daily to get that  sweet 100% completion and top 50 globally rank back.  

Vipère is a medium difficulty Misc challenge created by…
hackerfren's tweet image. And that makes all the Active Hack the Box MISC challenges complete! only about 50 left overall, soon I'm going to have to double up with doing boxes daily to get that  sweet 100% completion and top 50 globally rank back.  

Vipère is a medium difficulty Misc challenge created by…

There was a quote at the start of the old ocsp course I now live my life by. I think it was attributed to Abraham Lincoln. Paraphrasing: "If I had 6 hours to cut down a tree. I would spend the first 4 sharpening my axe" Enumerate, learn..... Then exploit with a sharp axe.


Another day, another hack the box challenge. hope you all are having a good week! mysterybox is a medium difficulty crypto challenge created by willwam845, with 790 solves and a 5 star community rating. Released over four years ago, it awards 30 points and took approximately 30…

hackerfren's tweet image. Another day, another hack the box challenge. hope you all are having a good week! 

mysterybox is a medium difficulty crypto challenge created by willwam845, with 790 solves and a 5 star community rating. Released over four years ago, it awards 30 points and took approximately 30…

These crypto Hack the Box challenges always make me wish I was better at math.... ReMeeting the Wheel is a medium-rated Crypto challenge created by SoraO, with 464 solves and a 4.9/5.0 community rating. Released 653 days ago (almost 2 years), it awards 30 points and took…

hackerfren's tweet image. These crypto Hack the Box challenges always make me wish I was better at math.... 

ReMeeting the Wheel is a medium-rated Crypto challenge created by SoraO, with 464 solves and a 4.9/5.0 community rating. Released 653 days ago (almost 2 years), it awards 30 points and took…

these ambient music youtube titles need to chill

hackerfren's tweet image. these ambient music youtube titles need to chill

Quantum computing makes me feel both incredibly smart, and incredibly stupid at the same time lol Global Hyperlink Zone is an easy quantum computing challenge created by DCryp7, with 93 solves and a community rating of 5.0/5.0. Released recently (0 days ago), it awards 20…

hackerfren's tweet image. Quantum computing makes me feel both incredibly smart, and incredibly stupid at the same time lol 

Global Hyperlink Zone is an easy quantum computing challenge created by DCryp7, with 93 solves and a community rating of 5.0/5.0. Released recently (0 days ago), it awards 20…

Do any of yall know what warhammer 40k is?

hackerfren's tweet image. Do any of yall know what warhammer 40k is?

These medium rated Hack the Box challenges are quite a step up from the easy rated. Dusty Alleys is a medium difficulty web challenge created by Kahla, currently solved by 738 users with a difficulty rating of 4.7 out of 10. The challenge awards 40 points and took approximately…

hackerfren's tweet image. These medium rated Hack the Box challenges are quite a step up from the easy rated.

Dusty Alleys is a medium difficulty web challenge created by Kahla, currently solved by 738 users with a difficulty rating of 4.7 out of 10. The challenge awards 40 points and took approximately…

Todays Hack the Box CTF challenge melted my brain a bit, as cryptography always tends to.... Neon Core is a Medium-rated Crypto challenge (4.8/10 difficulty) created by sl1de, with 195 solves and a remarkably fast first blood by Ap4sh in just 6 minutes and 19 seconds. Released…

hackerfren's tweet image. Todays Hack the Box CTF challenge melted my brain a bit, as cryptography always tends to....

Neon Core is a Medium-rated Crypto challenge (4.8/10 difficulty) created by sl1de, with 195 solves and a remarkably fast first blood by Ap4sh in just 6 minutes and 19 seconds. Released…

Im loving these Hack the Box blue team Sherlock challenges. SalineBreeze-1 is a very easy-rated Threat Intelligence Sherlock created by VivisGhost, released on August 21, 2025, with a linear investigation format and no challenge files provided. This challenge serves as an…

hackerfren's tweet image. Im loving these Hack the Box blue team Sherlock challenges. 

SalineBreeze-1 is a very easy-rated Threat Intelligence Sherlock created by VivisGhost, released on August 21, 2025, with a linear investigation format and no challenge files provided.

This challenge serves as an…

I might be doing blue team Hack the Box Sherlock CTFs now too.... PhishNet is a very easy SOC challenge created by OxAlpha4040, released on September 4, 2025, with an impressive 4.8 rating and over 2,400 solves already. The challenge asks you to analyze a suspicious phishing…

hackerfren's tweet image. I might be doing blue team Hack the Box Sherlock CTFs now too.... 

PhishNet is a very easy SOC challenge created by OxAlpha4040, released on September 4, 2025, with an impressive 4.8 rating and over 2,400 solves already. The challenge asks you to analyze a suspicious phishing…

Todays Hack the Box challenge marks the last one in the Secure Coding category. I really liked how these challenges focused much more on the learning side of things rather then the puzzle side. Phoenix Pipeline is a medium-rated Secure Coding challenge created by lordrukie with…

hackerfren's tweet image. Todays Hack the Box challenge marks the last one in the Secure Coding category.
I really liked how these challenges focused much more on the learning side of things rather then the puzzle side.

Phoenix Pipeline is a medium-rated Secure Coding challenge created by lordrukie with…
hackerfren's tweet image. Todays Hack the Box challenge marks the last one in the Secure Coding category.
I really liked how these challenges focused much more on the learning side of things rather then the puzzle side.

Phoenix Pipeline is a medium-rated Secure Coding challenge created by lordrukie with…

The first challenge for Hack the Box's new Quantum category was wonderful. Certainly not something you get to see everyday and I'm very excited to add the knowledge to my toolbelt. Flagportation is a Very Easy quantum computing challenge created by DCryp7, released just two days…

hackerfren's tweet image. The first challenge for Hack the Box's new Quantum category was wonderful. Certainly not something you get to see everyday and I'm very excited to add the knowledge to my toolbelt.

Flagportation is a Very Easy quantum computing challenge created by DCryp7, released just two days…

Less than 24 hours until the release of the Simply Offensive episode I recorded! We talked about my journey and my advice for others breaking into the cybersecurity field. It airs tomorrow, October 21st at 9:30 AM EST This is my first (of hopefully many) podcast and livestream…

hackerfren's tweet image. Less than 24 hours until the release of the Simply Offensive episode I recorded! We talked about my journey and my advice for others breaking into the cybersecurity field.

It airs tomorrow, October 21st at 9:30 AM EST 

This is my first (of hopefully many) podcast and livestream…

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