A current security issue with high explosiveness are currently circulating SMS messages with alleged parcel notifications including links to - alleged - shipment tracking.
Under no circumstances should these links, or links in SMS messages in general, be accessed.
What applies to emailsThis applies even more to SMS and messenger messages or missed calls from dubious numbers (ping calls): Exercise extreme caution when calling links contained in the messages, do not reply, do not call back.
In the case of the current wave of SMS fishing (recently also referred to as "smishing"), there are indications that in individual cases calling up the link contained in the text message led to a large number of further text messages being sent from the phone concerned to other numbers, which can cause costs (reported, for example, by the LKA Lower Saxony).
Other variants of the links lead to classic fishing sites in the fake design of, for example, renowned parcel services, on which personal data is then to be entered with the purpose of collecting precisely this data or also the conclusion of expensive subscriptions in the sense of a subscription trap.
The IT security company ESET also reportsthat some of the links in such messages lead to well-prepared fake pages that ask to install an alleged tracking app, behind which the Android banking Trojan FluBot hides.
So: No calling links in SMS messages.

See also
Again, running a website is like running a garden: Not everything that grows and thrives there is useful and desirable. Extremely annoying and dangerous are, for example, phishing e-mails, which you - especially if you run a website - have certainly already received yourself. We show you how to recognise phishing e-mails as such and avoid falling into the spam trap.