Hello Luciano,
For Chrome, you can have a look at the announcement in the ITS community - you will find more information about the alternative in a blog I wrote a few days ago.
For IE, please clarify about the SAP_BASIS of your ECC: SAPKB740xx ? In advance, I would recommend to adopt a higher kernel patch. Today patch level 315 was released, with several ITS/WEBGUI corrections.
Kind regards,
Cris