In talking of computer security, we often use the term "hole" to refer to a security flaw. We also say vulnerability or exploit.
Instead of calling it a hole, I suggest calling it a "window." As in "Somebody found a window into ssh" or "They got in through a window left open in Sendmail."
The plural is left as an exercise to the reader.
Today I got one of those bullying "cease and desist" letters from American Express's law firm, ordering me to take down the joke for trademark infringement. Here's the text of the cease and desist
Do these guys know who they are trying to bully? I guess not, here's my response to them:
You can "Screw More" with an American Express Lawyer
Do you know me?
I built a famous company with a famous name, and then satirists made fun of me by taking advantage of the constitutional protections afforded parody when it comes to trademark law?
That's why I retained Leydig, Voit & Mayer, Ltd, the "American Express Lawyers." Should you ever feel your reputation lost or stolen by free speech and satire, just one call gets LVM to write a threatening cease and desist letter -- usually on the same day -- citing all sorts of important sounding laws but ignoring the realities of parody. Most innocent web sites will cave in, not knowing their rights. LVM will pretend it has never read cases like L.L. Bean, Inc. v. High Society and dozens of others. There's no preset limit on the number of people you can threaten, so you can bully as much as you wish.
Many in the USA have trouble grasping how the country is viewed by those of us from outside it. I recently realized one analogy which explains this for those who are techies, especially Linux/Mac techies.
The rest of the world views the USA the way we techies view Microsoft. Except with tanks.