Timing attacks provide an attacker with secrets maintained in a security system by measuring the time it takes the system to respond to various queries.
Animals were maintained in biological security level 3 animal facilities and clinical examinations were performed regularly.
The KGB carried out foreign intelligence and counterintelligence and domestic counterintelligence and security, maintained security in the armed forces, and watched for potential traitors in the military and intelligence services.
I take offence at the idea that secrecy is being maintained in order to preserve national security".
Rather, we generally maintain positions in securities for a couple of days to a couple of months.
"If one wants to succeed in maintaining security in Kabul, then one cannot ignore insecurity in the rest of the country," said Jean Arnault, a United Nations official.
One good thing to emerge from Mr Qadir's killing is a call from two American senators for more American involvement in maintaining security in Afghanistan.
Police reportedly have called for the military's help in maintaining security in the city.
He maintained that security in the city had improved nevertheless, with a curfew and numerous checkpoints set up at night.
As the National Guard was called in to maintain security in evacuated areas, state governor Jay Nixon said on Tuesday that the floods, in which 13 people have been killed, could "go to levels never seen before".
