Skip to content
Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

control-flow integrity

Checking at every return and indirect call or jump that the destination is one the program's own code allows.

Control-flow integrity (CFI) restricts indirect control transfers to a precomputed set of valid targets: backward edges (returns) via shadow stacks or signed return addresses, forward edges (indirect calls and jumps) via landing-pad instructions, target bitmaps or type-based checks (Clang -fsanitize=cfi).

Read the full section →