Scientifically, DNA profiling and its use in law enforcement has room for improvement. Scientists in Israel reported in 2009 that DNA evidence could be made up as they fabricated both blood and saliva DNA from someone who was not the donor. Furthermore, they could doctor up a DNA profile in the database to make a match without ever testing a single sample. The lead author on the paper warned that they had demonstrated the possibility of engineering a crime scene through the ability to plant fabricated DNA evidence. Considering how much easier it is to plant DNA than fingerprints, the potential for misconduct is troubling.Fortunately, for all the privacy issues and potential for abuse, screening of felony arrests has a big bonus feature – true justice. Increased genetic screening has proven suspects were innocent through DNA testing in tens of thousands of cases, according to the Innocence Project. In addition, 272 post-conviction cases have been overturned through exoneration by DNA, allowing innocent people to go free, and 122 true perpetrators were identified through DNA exoneration.