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Posted by Tobias Thierer, Software Engineer

To improve security, insecure TLS version fallback has been removed from HttpsURLConnection
in Android O.

What is changing and why?

TLS version fallback is a compatibility workaround in the HTTPS stack to connect
to servers that do not implement TLS protocol version negotiation correctly. In
previous versions of Android, if the initial TLS handshake fails in a particular
way, HttpsURLConnection retries the handshake with newer TLS protocol versions
disabled. In Android O, it will no longer attempt those retries. Connections to
servers that correctly implement TLS protocol version negotiation are not
affected.




We are removing this workaround because it weakens TLS by disabling TLS protocol
version downgrade protections. The workaround is no longer needed, because fewer
than 0.01% of web servers relied on it as of late 2015.

Will my app be affected?

Most apps will not be affected by this change. The easiest way to be sure is to
build and test your app with the Android O Developer
Preview. Your apps HTTPS connections in Android O will not be affected if
they:

• Target web servers that work with recent versions of Chrome or Firefox,
  because those servers have correctly implemented TLS protocol version
  negotiation. Support for TLS version fallback was removed in Firefox 37 (Mar
  2015) and Chrome 50 (Apr 2016).
  


• Use a third-party HTTP library not built on top of HttpsURLConnection. We
  suggest you disable protocol fallback if youre using a third-party library. For
  example, in OkHttp versions up to 3.6, you may want to configure your
  OkHttpClient to only use ConnectionSpec.MODERN_TLS.

My app is affected. What now?

If your app relies on TLS version fallback, its HTTPS connections are vulnerable
to downgrade attacks. To fix this, you should contact whoever operates the
server. If this is not possible right away, then as a workaround you could use a
third-party HTTP library that offers TLS version fallback. Be aware that using
this method weakens your apps TLS security. To discover any compatibility
issues, please test your app against the Android O Developer Preview.

It seems Samsung is ready to give up on Windows notebooks, if a report by Digitimes is to be believed. According to their sources at a Taiwan-based supply chain, Samsung will no longer release conventional Windows based notebooks from next year.

So will it be dropping out of the notebook business altogether? Not quite. The report also states that Samsung will switch to only making Chromebooks from 2015. Samsung already has one model on sale right now and many more will be coming in future.
This move comes after Samsung failed to meet its own goal for notebook shipments in 2013. The company had planned on shipping 17 million units when it actually only managed around 12 million. Now, the company has set a goal of just 7 million for the year 2014, according to the same sources.
Whether the move to Chromebooks will be beneficial to Samsung or not remains to be seen. The Chromebooks do seem to be doing relatively well at the low end of the market while Windows 8, on the other hand, not being the success that Microsoft expected. For someone like Samsung, it makes sense to skate to where the puck is going to be, rather than where it has been.