The time_point representing the current time. time_point is a member type, defined as an alias of time_point<high_resolution_clock>.
Slammer (also known as Sapphire, Helkern or SQLExp) was a worm that appeared in 2003 January and was the fastest-spreading worm of its time. The worm was an extremely simple piece of code and its payload was an unintended byproduct of its spreading ability.
The small piece of worm code generates random IP addresses and sends itself to those addresses from the infected system. The main symptom of an SQL Slammer infection is high outgoing traffic to UDP 1434. Because the worm was able to fit into one packet, it could be propagated rapidly as computers fired off infected packets. As a result, it caused several denial-of-service attacks in 2002 and 2003.