If the cleaner is safe and effective there will be no problem. On the other hand, I do not want to ask myself, "What is the skill level of that person ?". I mean for people with any skill level although I am not talking about people such as CIA here.
I'm not trying to "hide" any "particular" data but, for instance, if I sold one of my PCs, I would prefer it to be cleaned "effectively" before. So my question back to you is what are your security needs? What are the resources, skill level, and motivation of the person who might see the data you are trying to hide? I think BleachBit's is better than secure-delete's sswap and smem. ** Months ago I wrote a RAM and swap space wiping option for BleachBit, but I haven't released it yet. BleachBit 0.6.5 does not wipe slack space. My testing shows it is effective with the most popular file systems (NTFS on Windows and ext3 on Linux). BleachBit wipes all the free space and tries to wipe the MFT (master file table) or inodes (on Linux). That said, BleachBit version 0.6.5 is rather effective at wiping free space. However, the CIA will always find other ways to "make you talk"-and these methods have nothing to do with your computer. The next step is physically destroying the drive by crushing it, burning it, degaussing, etc. Well, that isn't good enough because modern hard drives remap bad sectors and hide them from the operating system. If you are hiding from someone highly resourced, skilled, and well funded (for example, the CIA), then the next most secure method is wiping the whole drive ( not just the free space) including the whole operating system and every last file. You need to ask yourself, "Who am I trying to hide data from?" If you are hiding from family, you can stop here. And there isn't much you can do about the data collected on online accounts (Gmail, Hotmail, Google Docs, Facebook), cell phone records at the phone company, or financial records at banks. Of course don't forget to encrypt your hard drive, swap, portable media, and Internet connection. Call the best, most expensive data recovery companies in the world, and they will tell you they can't recover data overwritten with a single pass.ĭepending on your security needs and paranoia level, you may also want to wipe backups, portable media, slack space, fragmented files (SQLite3 databases such as Firefox URL history), RAM, swap**, cell phone, and other items. Read " Data Remanence" in Wikipedia and the references there. On modern drives, every pass after the first just wastes time-and lots of it! The Gutmann method is an urban legend: There is no evidence that two or more passes are any more secure than a single pass. I briefly looked at Secure-Delete's sfill, and I think BleachBit is similarly effective.īleachBit 0.6.5 uses a single pass secure erase method. I'm not familiar with Eraser for Windows, but if Eraser uses more than one pass, BleachBit is more "efficient" (I think you mean to ask "effective").
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