Proponents did not suggest how to discriminate between empty and warhead-enclosing balloons, for instance, but said that these "simple" countermeasures are actually hard to implement, and that defense technology is rapidly advancing to defeat them.

The simplest countermeasure to an ABM defense is to simply increase the size of the attack.

I had sent back scores of reports and documents throughout the years, some of them related to vital and often immediate enemy threats which could and should have been averted by a simple countermeasure.

But I take a simple countermeasure, which is just say no to third-party cookies.

In the alert, AT&T warned, "Unfortunately, at this time there is no simple or completely effective countermeasure that prevents exploitation of this vulnerability, short of replacing a master-keyed system with a nonmastered one."

China, he said, would definitely have to consider simple countermeasures like decoys, a large increase in the number of missiles or, perhaps most destabilizing of all, putting multiple warheads on each missile.

But in the end, the entry of America into the war and the use of simple U-boat countermeasures like convoys turned the tide.

So it's a little unfair for them to state with finality that they know of a simple, cheap countermeasure that can defeat the system from here to eternity.

The internal dose will depend greatly on the diet of the person and the degree to which simple countermeasures such as Prussian blue are used in animal farming.

The simple countermeasure of disabling remote images (web bugs) in emails eliminates this problem.