Tackis.xyz is the address of a misleading website that targets Apple device users and tries to scare them into downloading and installing a promoted application. Before we proceed, let's emphasize the fact that there are countless websites that are virtually identical to Tackis.xyz and they all claim to have detected a serious malware threat on the user's iPhone or device, something that is impossible for a website to perform on its own.
When users land on Tackis.xyz, most likely as a result of an adware application present on their device that has created deceptive Calendar messages, they will be presented with the rather alarming statement that their iPhones have been infected with 39 different viruses. The website undermines itself by changing that number to 30 viruses just one sentence later immediately. Apparently, these malware threats, which are completely fake and non-existent, have already managed to cause exactly 28.1% of damage to the user's device. What that number means and how was it estimated, remains a mystery. The website continues with its fearmongering by claiming that the iPhones SIM cards will soon be corrupted resulting in damage to the user's photos, contacts data and applications. A menacing countdown moving towards zero will also be displayed.
It must be reiterated that none of these claims are true. Their only goal is to scare users into downloading and installing a barely-working PUP application under the pretense that it would be able to deal with the fake malware threats. Even if the endorsed application is legitimate, which is sometimes the case, users should still download it from the official App store and not from a dubious website.