3 ms·
In addition to just blacking out, it's also important to screenshot the content if you are able to and then black it out. Otherwise you may leak meta data or pr
by 3pt14159 9y ago
In addition to just blacking out, it's also important to screenshot the content if you are able to and then black it out. Otherwise you may leak meta data or pre-rendered thumbnails. The reason you screenshot first and black out second is that it reduces the chances of you mixing up which file to upload.
- derefr 9y agoAlso, even more basic: don't just redact a PDF by adding black boxes over the text as a new layer. The text data is still there. (Yes, this has been a source of leaks on numerous occasions.)
- artursapek 9y agoShoulda told the FBI that years ago!
- lysp 9y agoSimilar thing happened in Australia recently. Every member of parliament and senators have their phone bills published to the government website as part of public disclosure. What happened though is instead of deleting their phone numbers, the contractor who was in charge of this simply changed the font colour of their phone number to white (same as the background). So if you looked at the PDF, it looked normal. If you highlighted the text - the phone number instantly showed up. Also viewing google "text" cache version showed the number too. As a result - hundreds of their personal phone numbers were available to anyone and everyone. http://www.smh.com.au/federal-politics/political-news/private-mobile-phone-numbers-of-nearly-every-federal-mp-accidentally-published-online-20170320-gv1x85.html http://www.smh.com.au/federal-politics/political-news/privat...