I looked at mine, and it only has entries from my current login session.

That, and it only has about 10 of them. But anyway, if someone can access your clipboard manager then that's not very good...

	▲	KetoManx64 2 days ago \| parent [-]
		If someone has access to your computer to access your clipboard history, you're already been pwned and the clipboard with random scattered entries is the least of your worries.