Vlad Ghisoiu
Scams Analyst at Square
Greater Phoenix Area United States
Summary
🤩
Rockstar🎓
Top SchoolVlad Ghisoiu is a data-driven scams analyst with 14 years of experience applying analytics to fraud prevention across major payments platforms, currently protecting Square’s customers. He combines hands-on transactional analysis and process documentation with a background in fraud operations at PayPal to continuously improve detection and mitigation strategies. A former contributor to high-profile open-source projects like Chromium’s crashpad and Clang/LLVM sanitizers, he brings low-level systems and security engineering experience that informs robust, reliable anti-fraud tooling. With a BA in Psychology, Vlad blends technical rigor and human-centered insight to spot subtle behavioral patterns in large datasets.
14 years of coding experience
The University of Arizona
Github Skills (42)
debug10
c-language10
dashboard10
wp-api10
llvm10
it-security10
memory-management10
overflow10
winapi10
integer-arithmetic10
c1110
cicd10
c1710
security10
kernel10
Programming languages (14)
Github contributions (5)
chromium/crashpad
Oct 2018 - Dec 2019
A crash-reporting system
Role in this project:
Back-end Developer
Back-end DeveloperContributions:39 commits in 1 year 1 month
Contributions summary:Vlad primarily focused on modifying and extending the crashpad project to include Windows support. Their work involved implementing and refactoring core functionalities related to memory access and process analysis on Windows, including the addition of `ProcessMemoryWin` and related testing updates. They also refactored the `ProcessReaderWin` class to utilize the new `ProcessMemoryWin` for improved memory access. Furthermore, the user made contributions to minidump stream handling, enabling the use of custom streams within minidumps and also contributed to fixing ARM/MIPS build failure and refactoring task memory initialization.
crash-reportingreportingperl
apple/swift-clang
Sep 2017 - Jan 2019
Role in this project:Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:5 commits in 1 year 4 months
Contributions summary:Vlad's contributions focused on enhancing the safety and security features within the Clang compiler. Their primary task involved refactoring Clang's Sanitizer infrastructure to leverage the newly introduced section headers in `SanitizerSpecialCaseList`. This involved modifying the code to allow the specification of sanitizers within blacklists, ensuring compatibility with existing blacklist configurations. Furthermore, the user addressed and reverted changes causing exceptions within the x86_64-linux-ubsan bot, showcasing a focus on stability and reliability.
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