Canon VIXIA HF M52 Instruction Manual page 226

Disposal
When you delete movies or initialize the memory, only the file allocation
table is altered and stored data is not physically erased. When you dis-
pose of the camcorder or memory card or give either to another per-
son, initialize the camcorder's built-in memory (-/, only) or
memory card using the [Complete Initialization] option (A 41). Fill it up
with unimportant recordings, and then initialize it again using the same
option. This makes recovering the original recordings very difficult.
226
Additional Information