Related to email protocols, clients, servers, content, and message format.

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2answers
493 views

Keyloggers and Email Accounts [duplicate]

This morning, I was experimenting with some keyloggers and noticed that they have a feature to send e-mails to the attacker. How can these e-mails be intercepted? Let us say that I have a packet ...
3
votes
1answer
386 views

Does the Windows Surface RT or Pro (Windows 8) support local encryption of Activesync data?

Our company policy is requires the local encryption of data for all email (in case the device is stolen) Does the Windows Surface (either version) support local encryption? Is the local device ...
0
votes
2answers
804 views

Keyloggers - Ports used by keyloggers

According to this article, keyloggers usually make use of the FTP ports and email ports: http://rbmikrotik.blogspot.com/2011/07/how-to-block-port-frequently-keylogger.html My question is, can a ...
14
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9answers
6k views

Encrypting email for gmail

My friend who is an accountant was asking me what the best way to exchange documents with clients. He was trying to tell me that just sending via email was sufficient and I told him he was insane. I ...
2
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1answer
1k views

How to determine source of e-mail and verify if the source is/could be legitimate?

I got an e-mail (in my spam folder) from usercenter@idcenter.uc.cn which asks me to click a link to validate my login for their website. Obviously, I deleted this e-mail without clicking it's link. ...
5
votes
1answer
336 views

Is it safe to abandon a free webmail account that has been in use for a significant amount of time?

I have a free webmail account that I have been using for around ten years now. Over the past two years I have almost phased out using this address. I have concerns around accounts that I may have ...
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2answers
374 views

Hiding emails from Google [closed]

From what I understand Google reads/scans all my emails so that they cab "provide" targeted ads and maybe for other reasons. If a have a group of people who want to hide their emails from Google, how ...
2
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0answers
232 views

User friendly PGP email [closed]

Does there exist cross-platform email handlers following these basic guidelines based on some very limited experience? Generate new key at first startup, rather than asking the user if they have an ...
15
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6answers
1k views

When secure email, is not really secure

We have a vendor who sends us "secure" messages. The messages come as an email message that contains a link to an SSL encrypted website that has the real message. There is no username/password on the ...
0
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1answer
204 views

Using a separate email address for each contact

A lot of the people I exchange emails with use services such as Google Mail. Recently it occurred to me that Google must maintain a social graph based on who exchanges emails with whom. It bogs me ...
2
votes
4answers
314 views

Open an e-mail account from only one particular system?

Is there a way to configure e-mail so that it can only be opened from one particular system? Or from multiple systems having some sort of unique key or particular static IP?
4
votes
3answers
1k views

Is Username/Display Name Login more secure than email login?

I recently started playing Star Wars: The Old Republic, which for those of you who don't know, is an MMO. Before playing the game, I would always log in with my email/password combo. However, I got an ...
2
votes
3answers
1k views

Is it possible to block emails (to all email accounts) that contain certain word/phrase patterns?

I'm not sure if this is the most appropriate SE group to ask this question but I'm hopeful that it will get some interesting and helpful input from the folks here before it is possibly moved. A ...
12
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3answers
472 views

Is it inconsistent to tell users to “not click on password links in email”, and requiring clicks on “forgot password” links?

On one hand, IT Security shops have been telling users to not click on links in email because they can do damage to your computer, or phish your personal information. Many of those issues are ...
1
vote
3answers
920 views

How to Detect Zimbra Sniffing Trojan

I am a sys admin of our system, we are running zimbra as email server in our environment. I got the following message from the CEO. "Everytime I send or receive an email - I get a SPAM ads a few ...
2
votes
4answers
3k views

Yahoo Email Keeps Getting Phished

I keep getting spam emails from myself (and I am sending them to others as well) on my Yahoo Mail account. I have already went through two password changes which I thought were secure. My very last ...
1
vote
1answer
653 views

How do I know if my email account has been hijacked?

A few times now, I've received emails from contacts with subjects along the lines of "hi!" and message bodies of only a link to some website. I've checked the ip of the sender of these emails, and ...
1
vote
1answer
335 views

How effective is Activesync Certificate revocation using CRL or OCSP

We determined that a number of our account lockout issues are related to Activesync devices using old/expired passwords. One way to remedy an account lockout issue is to issue and deploy certificates ...
4
votes
1answer
246 views

Potential issues with Kim Dotcom's new proposed “encrypted webmail service”

Just spotted a Reddit thread about Kim Dotcom, of MegaUpload fame, planning to produce a secure webmail system that allows people to communicate securely, without the worry of having their messages ...
3
votes
4answers
3k views

How can an internet contest verify unique votes with only an email as an input parameter?

For my computer security course we are brainstorming different ways to use attributes for a unique user (that are readily available over a network) to prevent various mischievous activities. We've ...
4
votes
3answers
462 views

Allow a PA to see a director's emails, but keep some emails private

We have a problem with email potentially being viewed by directors PAs, which we need to protect, the situation is as follows: Director A wants to send an email to Director B, both director A and ...
8
votes
4answers
4k views

Why is it even possible to forge sender header in e-mail? [duplicate]

With so many popular e-mail providers forcing users to log on using their SMTP servers, why is it still possible to forge "From: " header in e-mails? What prevents users from simply discarding the ...
7
votes
4answers
383 views

Next steps after webmail account was compromised

John Doe told me the following story: I got a mail from a good friend. It just contained a single link. That seemed odd but I didn't think a lot about it. After clicking on the link, the web site ...
3
votes
3answers
301 views

I stupidly responded to an email from a hacker posing as a friend

I responded to an email from a hacker posing as a friend in distress. I have a really long secure password ... caps/special figures/numbers/over 14 characters long. My account name is my first, ...
4
votes
2answers
165 views

Security implications of storing email attachments on Centos Server

There is an application I am working on which requires processing the incoming mails to cs@company.com. The company.com mail accounts are being run via Google Apps for Business. So I fetch the ...
0
votes
3answers
159 views

Secure design for handling mail attachments

I'm fan of split design for web browsing for security reasons - trusted web sites can be accessed via http proxy from pc clients, the rest of web sites via some remote desktop technology from specific ...
4
votes
1answer
329 views

Apart from the lack of native Oultook support, why should one prefer S/MIME over PGP/MIME for email?

From my (still quite subjective) point of view, GnuPG/PGP is superior to SSL (or more specifically, PGP/MIME over S/MIME; maybe in other areas SSL is the better choice), e.g. due to the support of ...
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4answers
157 views

Is there any way to know the contact email on a contact form? [closed]

When a website has a contact form where the email isn't shown, is there any possible way of know to which email is the contact form sending the message?
3
votes
2answers
1k views

How does the Yahoo webmail exploit work?

I got an email (referring to me by name) from somebody I knew a while ago and the email itself was just two/three lines containing a bit-ly link. Although it seemed like it actually could be ...
34
votes
4answers
2k views

If email is insecure, why do we use it for password resets?

I found myself telling a coworker today "Email is insecure, that's why we developed our secure report application." But then it struck me, Why is email considered insecure? If it is so insecure, why ...
1
vote
3answers
2k views

Emails wrongly flagged as spam by filter, claiming suspicious URLs

My wife runs a small website (in Japanese) selling vintage products online. She's sending out emails to customers with details about their order, together with images of the products and links to the ...
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1answer
145 views

E-mail with obfuscated code / no trace in e-mail server

I've got a situation where one of my clients sent me an e-mail with what appears to be obfuscated shell code. The really bizarre thing here is that I see no trace of this e-mail showing up in the mail ...
1
vote
1answer
222 views

Any recipient can modify an order confirmation mail, right? Does this ever matter ?

I have boldly stated that there is no way to 'write protect' an e-mail, but want to be sure of my ground. Surely if Joe Bloggs receives an e-mail from me (or my e-commerce site or a web application ...
2
votes
1answer
281 views

Email Compromised due to Yahoo Mail Exploit

On Monday due to XSS vulnerability present in the Yahoo mail my email has been compromised. I have immediately changed my password but i am not sure is this enough i.e. do i need to delete my cookies ...
10
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1answer
1k views

GPG-encrypted mailing list and other approaches to safe communication

What is the best way to communicate privately on a mailing-list? Requiring each member of the list to have the public key of each other member, and encrypt their messages with those, is cumbersome to ...
4
votes
3answers
1k views

Can email be encrypted before it reaches the mail server? If not, is there something that would allow something like this that's being worked on?

I was thinking about hosting my own email (own email server) instead of using Gmail. But then I realized I could never host my email on a server where I'm also hosting Wordpress. That is because I ...
5
votes
1answer
11k views

How do I create a valid email certificate for Outlook S/MIME with openssl?

I need to create a certificate for email encryption and signing that has to be used by Outlook 2003+. I'm using OpenSSL, my self-signed root-CA is already imported into the trusted root-CA store. ...
2
votes
4answers
923 views

Should links to images contained in emails be secure?

We are generating emails which contain links to images: our client's branding, images showing other products offered by the client etc... What are the security pitfalls if these links in the emails ...
8
votes
5answers
674 views

E-mail can be made to appear like it came from a big organization?

I know almost nothing about security. So, please bear with me if the questions sound silly. Is it possible for a malicious person to make an e-mail appear as if it came from a big company like ...
6
votes
5answers
751 views

How do spammers verify the validity of a huge amount of email addresses?

I noticed that there is an email address validation method, that is to telnet to a email MX server and send rcpt command to the server. But for this method, the MX server may abort connection after ...
3
votes
3answers
115 views

Are mail-servers removed from security concerns in contrast with cloud storage?

I have meet people and even businesses that are against using the cloud for data storage invoking security risks. In the same time they seem perfectly fine using email services (usually from obscure ...
3
votes
1answer
1k views

Is using Gmail's browser-based client, more secure than using IMAP?

I never use the same password twice and my passwords are always comprised of a long, random string of letters, numbers and symbols. (with an offline password manager to store each password string) ...
1
vote
2answers
155 views

Activesync: If I disable or rename the AD account does that mean the phone won't be wiped?

Suppose an Activesync phone needs to be wiped because it was lost, stolen, or it was an employee termination. If we disable the account prior to wiping the device (or the device receiving the wipe ...
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votes
1answer
4k views

how to trace the IP address of gmail account sender via browser [duplicate]

Possible Duplicate: How to trace email? i wanted to know the location of sender email which sent us the threat email the header of email is mentioned below Analysis: Received: from ...
8
votes
6answers
633 views

Security of email [duplicate]

Possible Duplicate: How commonly are SSL/TLS or S/MIME used by e-mail providers? Say, Alice uses gmail and Bob uses hotmail. Alice wants to send an email to Bob. Alice goes to gmail ...
2
votes
3answers
313 views

PCI Compliance Problem

My company is trying to become fully PCI Compliant and we are switching our outdated systems to use Authorize.net CIM among other things. But, currently we're all over the place and until our new ...
2
votes
1answer
154 views

Encoding HTML email content

Say I have a form on my website. The input elements of the form are: email address, name and some feedback textarea. The server-side application that this form is submitted to will send an HTML ...
4
votes
4answers
335 views

Securely publishing GPG keys

This is probably a stupid question/vaguely defined, but I need to ask it anyway. I want to put a public key for mail exchange on my website, such that even very powerful adversary with power to ...
18
votes
4answers
1k views

What type of content better not to transfer by email?

Email is one of the main tools of business communication. On the other hand, it is not a secure way of communication. But to what extent it is not secure? I have always wondered how sensible it is ...
-1
votes
2answers
128 views

Can 2FA help handle mixed personal and business accounts after leaving a company?

I do not want a super administrator in Google Apps to log to my account after leaving company, so I enabled 2-step verification. He could login to many sites as me with just a link in "forget ...