I absolutely agree - a reputation is easily shattered, which is why it seems incredulous that you guys were actually knowingly behind this.
Like I said, however - the issues disappeared upon uninstallation of the lastpass browser extension pack for OSX, and it certainly seemed to appear on its installation.
For everyone's sake, let's all hope I was idiotic at some prior point and somehow had a different drive-by install...
The md5 of our download is 0290ce268f6e57b1ce26bb21748b12eb, it was last updated on Mar 4.
It most likely came from a different source.