Returning Memory Card

[Gangster]

As title, returning a memory card which has intermittent faults.

I would like to secure erase the memory card to make sure nothing can be retrieved. Any go to free applications that can do the job?

Will of course be doing a Google, but if anyone could chip in here that'd be appreciated.

 

[Gangster]

Try SD Formatter 4.0 it has an option to overwrite whilst formatting.

https://www.sdcard.org/downloads/formatter_4/

Thanks, just to be sure the overwrite is the same as a 'secure' format?