Seems http://www.matrix-ib.nl has their code signing certificate spoofed or stolen: https://www.virustotal.com/en/file/87ca8084b455fc7c39129e07520510960aaea246912c5d91bcc62264c6f4824f/analysis/ …pic.twitter.com/JdPsdMhilL
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@mikko Most probably stolen, have seen some other samples with this certificate as well. I'll see if I can find them again. cc @cryptoron