SAN FRANCISCO (Reuters) - WhatsApp and Telegram patched flaws in their popular instant messaging applications after security researchers showed that they could seize control of user accounts.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=GsVdzz-gfuc:yzfstvPtEVQ:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=GsVdzz-gfuc:yzfstvPtEVQ:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=GsVdzz-gfuc:yzfstvPtEVQ:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=GsVdzz-gfuc:yzfstvPtEVQ:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=GsVdzz-gfuc:yzfstvPtEVQ:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/GsVdzz-gfuc" height="1" width="1" alt="" />