From 31st of May 2018, browsers or technologies of the following specification or lower may no longer work on Springer Nature sites including Springerlink ejournals and ebooks & Nature.com:
Android 4.3
Baidu Jan 2015
IE7 / Vista
IE8 / XP
IE 8-10 / Win 7
IE 10 / Win phone 8.0
Java 6u45
Java 7u25
OpenSSL 0.9.8y
Safari 5.1.9 / OS X 10.6.8
Safari 6.0.4 / OS X 10.8.4
For more details, check the following Security Enhancement bulletin: