{"id":140,"date":"2010-03-08T16:05:26","date_gmt":"2010-03-08T21:05:26","guid":{"rendered":"http:\/\/www.flatline.net\/journal\/?p=140"},"modified":"2010-03-08T16:06:53","modified_gmt":"2010-03-08T21:06:53","slug":"twitter-privacy-problem","status":"publish","type":"post","link":"http:\/\/www.flatline.net\/journal\/?p=140","title":{"rendered":"twitter privacy problem?"},"content":{"rendered":"<p>Today I got an interesting screen on twitter:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/www.flatline.net\/journal\/wp-content\/uploads\/2010\/03\/twitter-privacy.jpg\" alt=\"twitter-privacy.jpg\" border=\"0\" width=\"476\" height=\"524\" align=\"center\" \/><\/p>\n<p>Now stop for a second and think about this.  Twitter won&#8217;t reveal my phone number, but they will let people search for me by my phone number.<\/p>\n<p>So if I just search for all permutations of phone numbers for a given NPA (area code) and NXX (the first three digits of a phone number in the USA),  I can make a list of twitter users in a given geographic area or at a specific business.   NPA is often a geographically large area, but a given NPA\/NXX  pair can be very small &#8212; as small as a single company or small town.<\/p>\n<p>Obviously you&#8217;d get caught trying to search for a bajillion contacts at once, but if I opened ~50 twitter accounts and added 10-20 numbers to each account per day, I could do 500-1000 lookups and cover a given NPA\/NXX pair within a week or so.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today I got an interesting screen on twitter: Now stop for a second and think about this. Twitter won&#8217;t reveal my phone number, but they will let people search for me by my phone number. So if I just search for all permutations of phone numbers for a given NPA (area code) and NXX (the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,12],"tags":[],"class_list":["post-140","post","type-post","status-publish","format-standard","hentry","category-hacking","category-reverse-engineering"],"_links":{"self":[{"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/posts\/140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=140"}],"version-history":[{"count":3,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/posts\/140\/revisions"}],"predecessor-version":[{"id":143,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=\/wp\/v2\/posts\/140\/revisions\/143"}],"wp:attachment":[{"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=140"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.flatline.net\/journal\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}