I received the email below, and I was wondering if I should be worried? As you can see, the suggestion is that all my data will be erased. Please let me know you think this is just a hoax?
Hello! WannaCry is back! All your devices were cracked with our program deployed on them. We have perfected operation of our program, so you will not be able to regain the data after the attack.
All the information will be encrypted and then erased. Antivirus software will not be able to detect our program, while firewalls will be strengthless against our unique code.
Should your files be encrypted, you will lose them forever.
Our program also expands through the local network, erasing data on all computers connected to the network and remote servers, all cloud-stored data, and freezing website operation. We have already deployed our program on your devices.
Deletion of your data will commence on June 22, 2018, at 5:00 - 10:00 PM. All data stored on your computers, servers, and mobile devices will be destroyed. Devices working on any version of Windows, iOS, macOS, Android, and Linux are subject to data erasion.
So as to prevent data demolition, you can pay 0.1 BTC (~$650) to the bitcoin wallet:1JNA8bedQbSEikZMF7FQFA1r9K1qA2RUtW
You must pay timely and notify us about the payment via email until 5:00 PM on June 22, 2018. After payment confirmation, we will send you instructions on how to avoid data erasion and such situations from now forth. Should you try to delete our program yourself, data erasion will commence shortly.
To pay with bitcoins, please use localbitcoins.com or other similar services, or just google for other means. After payment write to us: firstname.lastname@example.org