The greatest strength of a short link is also its weakness: it does not show you where it goes. That is precisely why scammers like them.
Where the risk comes from
With a long address you can see the destination. With a short one you cannot. That uncertainty is what phishing attacks exploit: the user believes they are going to their bank and lands on a copy.
Delivery notifications by SMS, invoice warnings by email and prize announcements on social media are the forms you will meet most often.
Check the destination first
Most shortening services offer a way to preview where a link leads — usually by adding a character to the end of the address, or through the service's own link verification page.
Make it a habit with any short link from a source you do not recognise. It takes seconds.
Warning signs
Urgency. «Your account will be closed within 24 hours.» Rushing you is the point; it stops you thinking.
Something you were not expecting. A delivery notice for an order you did not place, a prize draw you never entered.
Requests for personal details. Legitimate organisations do not ask for passwords or card numbers through a link in a text message.
Sloppy writing. Spelling errors and awkward phrasing in what claims to be a corporate message are a strong signal.
What services do about it
Serious shortening services check every address they create against blocklists and phishing and malware databases, and block links to executable files.
When someone clicks a blocked link they are not forwarded; they see a warning page instead. User reports feed into the same process.
Making your own links trustworthy
If you are the one sharing links, there are concrete ways to earn trust.
Use your own domain. A short address carrying your brand looks more credible than a generic shortener and gets clicked more.
Choose meaningful aliases. /campaign-details tells people something; random characters do not.
Protect sensitive content. Use a password for documents that should not be public.
Set expiry dates on time-limited campaigns so finished promotions do not keep circulating.
If you see something suspicious
Do not click, and report it. Most services have a reporting page and do not require an account. Reporting stops the same link reaching other people.
If you did click and entered information: change your passwords, call your bank if card details were involved, and run a security scan on your device.
In short
Short links are not unsafe; they are opaque. That opacity can be managed from both sides. Users check the destination, and the people sharing links use branded, meaningful addresses. Together, the two narrow the space for abuse considerably.