About OTC CatchUp

Note OTC CatchUps are weekly informal sessions involving project showcases and technical discussions. They are held every Saturday from 10:30 PM IST. Join in!.
For all summaries, please visit catchup.ourtech.community/summary.

OTC CatchUp #306

Date: 19-09-2026

Duration: 3 hrs 58 mins

Topics Discussed

  • Urmil Saini shared that he is studying networking for cybersecurity and volunteered at a medical themed hackathon where teams combined hardware and software.

  • Alpesh Bhagwatkar talked about the vulnerabilities he has been reporting, including IDORs that came back after the vendor shipped an update.

  • Kartik Soneji explained that JavaScript’s split() adds the text matched by a capturing group to the result array, while a non-capturing group (?:…​) does not.

    • He used it to normalise hand typed names in old FD records, where the separator was &, and or a comma.

  • Alpesh shared how to start with reverse engineering: reverse a hello world in C or C++, learn how values are stored, add complexity, and follow and take notes from people who do it.

  • Urmil asked about learning paths on TryHackMe.

    • Alpesh recommended the SOC Level 1 and Junior Penetration Tester paths, said to skip detailed notes for now, and pointed to Hack The Box for more depth.

  • Alpesh explained why Windows has a larger attack surface than Linux, with attacks like pass the hash and Active Directory at the core of most organisations.

  • Darshan Rander talked about a slow service at work that turned out to be a database problem, not a .NET one.

    • A load test with a day of real queries showed a 40 vCPU database handling only around 180 requests per second, because of SELECT * queries filtered in the app and extra round trips that could have been one query.

  • Darshan shared an interview question on what happens when a Redis cache goes down. He suggested an in memory cache, but the expected answer was Redis replicas.

  • Darshan and Kartik discussed building consent tools for the Digital Personal Data Protection (DPDP) Act, and whether it will be enforced.

  • Darshan is building a small CRM for a friend to track FD maturities, loan EMIs and insurance across clients, generated with AI from an ER diagram he drew.

Attendees

  1. Alpesh Bhagwatkar

  2. Darshan Rander

  3. Kartik Soneji

  4. Mohit Gangwani

  5. Rishit Dagli

  6. Ayush

  7. Ayush More

  8. Chiranjeet Borah

  9. Divya Shivdasani

  10. Janvi Matani

  11. Urmil Saini

Meet Screenshot

Oops, we forgot to take a screenshot this time


Note For all summaries, please visit catchup.ourtech.community/summary.

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