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Question about MAC addresses
Here's something I don't fully understand. So please just tell me if I'm missing something or get something wrong. I get that a MAC address uniquely identifies your computer's hardware and it can be used to identify you. When you visit a website, they have your IP address which you can hide with a VPN. This obviously isn't foolproof since I've seen webRTC being able to get your actual IP if you have JavaScript enabled but for the average person, it'd be fine. But when you look at all of these guides for being more secure online, they always talk about IPs but never mention MAC addresses and if they do, it's only in passing and is something like "Kali Linux comes with a tool called MACchanger if that interests you". What I don't get is, people make a point of spoofing their MAC address but this only seems to be when they're going to commit a cyber crime of some sort and I really don't see many people doing it just to be more secure like when they use VPNs to mask their actual IP. So is it pointless to try and coverup your MAC address, as someone not looking to do anything illegal? Do websites not have access to it even though you're using a VPN? I mean, if you were to use a VPN but did nothing to hide your MAC address, would that be a security flaw? Who can see your MAC address? The same who can see your IP? I remember Snowden saying that the government can track us using our MAC addresses but I guess it's pointless to try and hide yourself from the NSA since you'd probably lose unless you've got a 400 IQ.

Submitted May 11, 2018 at 04:56PM by deeptoot2332
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Not Your Server, But Still Your Code (serverless security LA)
https://sprky.co/talks/

Submitted May 11, 2018 at 06:43PM by sprkyco
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SMB hash hijacking & user tracking in MS Outlook (CVE-2017-11927 and CVE-2017-8572)
https://ift.tt/2KbJ6tF

Submitted May 11, 2018 at 09:43PM by digicat
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Google may share your email address with malicious websites
https://ift.tt/2KUYtrU

Submitted May 11, 2018 at 10:47PM by albinowax
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The private key of an SSL certificate that belongs to a brazilian bank has been leaked. What are the risks?
Some background first: last week, some data from a Brazilian bank named Inter was rumored to have been leaked. That included personal data, documents, transaction logs, credit card passwords, everything a bank could possibly have, including the certificate's private key. The bank denied everything.Two days ago some guy showed up on r/brasil claiming he obtained the private key from somewhere public, which he did not disclose. Someone suggested that he signed a message to prove he had it, which he successfully did and can be verified here. It's worth noting that the certificate in question had been replaced on the website in march but did not expire and was still valid.The obvious reaction to this would be for the bank to ask for the revocation to the Certificate Authority, in this case, Go Daddy. The surprising thing is: it's been more than 48 hours since this went public and the certificate has not been revoked yet. The bank is dead silent about this.Considering the keys have fallen in malicious hands which intends to do man-in-the-middle attacks, what are the possible attack vectors from which this is possible? I know DNS spoofing is a possibility. Are there other types of attacks which can originate from this? Some relatives have bank accounts there and are worried. Thanks in advance.

Submitted May 12, 2018 at 12:40AM by Capable_Professional
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