During this period, contributed to FFmpeg, libtiff, and OpenSSL by delivering targeted improvements in memory safety, performance, and reliability. Addressed a HEVC frame allocation overflow bug in FFmpeg by validating memory calculations in C, reducing crash risk on 32-bit systems. Enhanced libtiff’s image processing by introducing robust uint32 overflow checks and safer buffer management, strengthening resilience against crafted TIFF files. In OpenSSL, optimized canonicalization of ASIdentifierChoice and IPAddressOrRanges by replacing an O(N²) merge with a more efficient linear sweep, improving throughput and memory safety. Work emphasized system programming, performance optimization, and comprehensive regression testing across all changes.