FAQ


When will the book be published?

October 19, 2021

The book is available for pre-order from No Starch Press here and other online booksellers.

Code from the book

Where can I find code from the book online?

It isn’t online at this time. I haven’t made the code in the book public because it’s intended to show vulnerabilities and is not intended to be copy/pasted. The fixes I demonstrate are, so far as I can verify, secure; however, they are kept simple for explanatory purposes, and are not necessarily bullet-proof for all possible applications.

The last thing I want is for someone to grab some code with blind faith and then it turns out to have a vulnerability under certain conditions. (See the next question for more on how that could easily happen.)

Why doesn’t the book provide code that is 100% vulnerability free?

There are several reasons I don’t guarantee any code in the book unconditionally: (a) the requirements are informal and may not apply in every possible case of implementations; (b) they are not thoroughly tested (in part this is because the requirements are vague); (c) some API may vary between platforms (e.g. details of pathnames differ between *nix and Windows platforms in complicated ways).

If we knew how to write code that perfectly handled all known common vulnerabilities that would basically solve our security problem. Bug bounty money is good money, but if you had a solution that would end the need for bug bounties entirely, that would sell for serious money.

How can I get a copy of the code in the book for security research?

It is conceivable that this code would be useful for security research. Most code snippets in the book are only a handful of lines, but if anyone has a special need please contact me via Linked In to discuss.