I've read a comment made by Radames in this topic:

viewtopic.php?f=58&t=6824&hilit=security

“Still, kernel updates should be available using apt-get dist-upgrade, because it is critical for systems security to have most recent updated kernels.
Please make possible to auto-upgrade kernels using apt-get dist-upgrade on 64 bit versions too.”

Well that topic purpose was to ensure that DirtyCOW bug was fixed. And I've been searching for how to keep my personal data secure, beyond upgrade the kernel, what should I do to achieve this? And how?

And another question, every time I browse through some website from Google like youtube or gmail e get this warning:




And just happens with the Google's websites, at any other the warning turns to green and it says I'm secure.. perhaps I'm with troubles related to certification, my question is if I upgrade the kernel will it gets fine?
See I'm not paranoid, and I believe that Google is not stealing my data (like credit cards, passwords), but I don't like when somebody says the place where I am is dangerous. Do ya ? hehheeh well I trust in what I see.

It appears that although it has https in the header, that the site is in fact not secure.

Don't give it any personal details, & you are likely to be as safe as any other http site.

2 sites where you can extensively read/discuss"how to keep my personal data secure"
wilderssecurity.com
ghacks.net

No, upgrading your kernel (or not) will not affect the"Not Secure" warning displayed when you visit youtube/google.
You mentioned"related to certification". Yes, my guess would be that's due to an expired SSL certificate.

Firefox has an inbuilt"web console" and similar tools which can you can use to inspect details of what's being loaded into a page.
Refer to the links below for usage instructions + screenshots:

========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector"
linktext was:"https://developer.mozilla.org/en-US/doc ... _Inspector"
====================================


========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"https://developer.mozilla.org/en-US/docs/Tools/Web_Console"
linktext was:"https://developer.mozilla.org/en-US/doc ... eb_Console"
====================================


========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor"
linktext was:"https://developer.mozilla.org/en-US/doc ... rk_Monitor"
====================================


I'm wondering whether you are seeing"Not Secure" due to an outdated copy of cert for youtube.com (or google.com) in your locally-cached certificate store.
If you paste"about:support" into your firefox addressbar, what is shown for"version" and"buildID"?

from"about:support" I got these two lines
Version 51.0.1
Build ID 20170125094131
and now youtube has the security lock like this:


this kinda different from Chrome, I don't know if it's a bug or am I really unsafe?


I didn't care about that message until yesterday when I was going shopping and stay afraid and I gave up...

Still, I don't want to use Firefox , because I'm feeling it's slower than Chrome, or maybe there is something outdated, I 'll check flash player later... well, my laptop isn't powerful as I wish!

It does look like a cached outdated ssl certificate
Shift + refresh / f5 maybe?
Otherwise I think you can dump the cached certificate via the settings page.

I think that this was solved by just installing a .crt file from this webpage
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"https://pki.google.com"
linktext was:"https://pki.google.com"
====================================
/; via the chrome's setting page .
I believe that's the outdated certificate, after some browsing I've discovered this:



Although my antix15 still works, so I will not upgrade to a newer version,

thank youu for help me!