Definition - What does Vulnerability mean? Vulnerability is a cyber-security term that refers to a flaw in a system that can leave it open to attack. A vulnerability may also refer to any type of weakness in a computer system itself, in a set of procedures, or in anything that leaves information security exposed to a threat.
Currently, the one hundred dollar bill is the highest denomination printed. At one time the US also issued $500, $1000, $5000, and $10,000 bills for general circulation, and p â¦ rinted special $100,000 bills for use inside the government.Printing was discontinued in 1945.  The present denominations of US currency in production are $1, $2,  $5, $10, $20, $50 and $100.    Printing of high-value notes was suspended in 1945, although the  last ones were all part of the 1934 series and carry that date  regardless of what year they were actually issued.
The $1 US Dollar (USD) bill is the most commonly circulated US currency bill, with more than 10 billion bills in circulation. Next is the $100 USD bill at almost 9 billion bills circulating, followed by 7.4 billion $20 USD bills.