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Bank harrasses user because he tweeted screenshot of their SSL certificate

ebalaskas.gr

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Re: Bank harrasses user because he tweeted screenshot of their SSL certificate

#8
It's dangerously close to a passive-agressive pitchfork mob, but I propose that many people start tweeting to greek banks regarding their SSL configurations. The National Greek Bank, for example, scores an F on the SSL Labs Test because they are using TLS 1.0 and are vulnerable to POODLE:

https://www.ssllabs.com/ssltest/analyze.html?d=nbg.gr

their twitter account is: https://twitter.com/ibanknbg

EDIT: The most effective outreach will be friendly and respectful, if anyone chooses to do this. Also, all the other major greek banks score poorly:

Piraeus Bank Score: F! https://www.ssllabs.com/ssltest/analyze.html?d=www.piraeusba... twitter:https://twitter.com/skepsouprasina

Alpha Bank: B https://www.ssllabs.com/ssltest/analyze.html?d=www.alpha.gr&... twitter: https://twitter.com/alpha_bank

Eurobank: Score: F! https://www.ssllabs.com/ssltest/analyze.html?d=eurobank.gr twitter:https://twitter.com/Eurobank_Group

Re: Bank harrasses user because he tweeted screenshot of their SSL certificate

#9
> Firefox suggests some security concerns in the firefox console on both sites. Especially about how weak is sha1 algorithm. Both sites have a 2048 public cert, the one use TLS1.2 but the other TLS1.0 and one of them have a 128bit private key size. You all understand that from a security point of view, these things arent best practices. Especially if you are a bank !

128 bits for symmetric key ciphers is actually fine. Especially with AES.

TLS1.0 and SHA1 certificates? I'd expect better.

> The second bank has also a cross site javascript script and that’s for sure not a best practice. Again that’s not a security hole. They just pull a javascript from their official web page (although a different url/domain from their web banking).

Yay, watering hole attack vectors.

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