BRUSSELS (Reuters) - European consumer protection authorities will ask social media companies Facebook, Google and Twitter to amend their terms of service within one month or possibly face fines, a source familiar with the matter said on Thursday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=OqcnMI4THrM:Z6wwMuCxxR4: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=OqcnMI4THrM:Z6wwMuCxxR4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=OqcnMI4THrM:Z6wwMuCxxR4:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=OqcnMI4THrM:Z6wwMuCxxR4:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=OqcnMI4THrM:Z6wwMuCxxR4:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/OqcnMI4THrM" height="1" width="1" alt="" />