Are my links scanned for malware or phishing?

Yes. Destination URLs can be automatically checked against malware and phishing databases at the time a link is shortened, when it's clicked, and periodically afterward, to help keep both you and your visitors safe from malicious sites.

If a link you're trying to create or share gets flagged, it's because the destination matched a known threat database, not a random error, and you'll need to point it somewhere safe to proceed.