To prevent this, you can refrain from opening any message with a sender or subject line suggestive of spam.
"You could pay for advertising on other networks, and I think it's occasionally done," said Karl-Heinz Nassmacher, an emeritus professor of political science at the University of Oldenburg, "but this is a Pandora's box, and the parties refrain from opening it.
Users of Apple mobile devices should only use websites they deem trustworthy and refrain from opening PDF files until Apple releases a fix, Germany's federal office for information security said.
Early the next morning, he sent a one-sentence cable to all military-intelligence sections in the province: "You are requested to instruct your agents to strictly refrain from opening fire indiscriminately and killing people".
And where a sign in your guesthouse room asks you to refrain from opening your curtains as your neighbour will be offended if he catches you looking into his yard.
The Commission refrained from opening a case against France for alleged discrimination, instead demanding more proof to support France's claim that it was not deliberately targeting Roma.
Norris refrained from opening fire, recognizing this would compromise the covert mission and that they were outgunned.
It had refrained from opening a brand-new community center, built before the housing bust, because it couldn't pay to staff the place.
If you suspect a girl you're seeing might be playing you for what's in your pocketbook, refrain from opening it up when you're out.
The Fed did nothing to fuel such speculation yesterday, as it refrained from open market operations.
But so far, it has largely refrained from open confrontation with the demonstrators.
