Ah, yeah, just a little harmless negligence. In that case, I’ll keep blocking all their ads, and feel 100% morally and ethically in the right.

Edit: and in the case of this article, the ad service is Google, and the site serving the ads is Google.com. Not a great look for a trillion dollar company.

For a company of this size, not taking steps to prevent all malicious ads from being created before they’re even served once is a deliberate choice they’ve made, which I would argue amounts to Google deliberately serving its customers malware.