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

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3
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2answers
275 views

Legal process for suing joejobber?

I'm currently being joejobbed, and want to sue the joejobber. Details: I have real damages: the joejob causes me to receive fake bounces, which: stop/delay my receipt of legitimate mail, since ...
3
votes
1answer
148 views

Why shouldn't I sign my email newsletter using an s/mime email certificate?

I currently offer email subscriptions on my blog, something I coded myself in PHP. People sign up on the blog using their email address. I send them an email with a link to verify their email address ...
3
votes
2answers
463 views

Why don’t SMTP servers just require all senders to be authenticated before accepting mail?

Why don’t SMTP servers just require all senders to be authenticated before accepting mail?
3
votes
1answer
980 views

The security of sending emails with SPF/DKIM, but not signed

We're using an email sending service (fairly known) to send our emails. We made DNS changes so that emails going through them would pass SPF and DKIM. A few days ago we noticed that they allow any ...
3
votes
3answers
470 views

Should email verification links be 'time limited' after user registration?

Regarding web application user management, I understand that password reset links are effectively "password equivalents", and therefore it makes sense to limit them to one use only and also make them ...
3
votes
2answers
2k views

Send credit card info by email from HTTPS and SMTP on SSL

A client asked me to receive credit card info of his costumers by email. I know that is a very very not secure way ... But if the page with the input form is on HTTPS, and then i use a smtp (like ...
3
votes
1answer
195 views

How to protect against exploitation of email addresses from an mistakenly expired domain?

I have a domain name that I have registered for a long time. Due to a combination of bad luck and oversight, the domain name expired and was rebought by somebody else. I am attempting to buy the ...
3
votes
3answers
21k views

Why did secureserver.net (godaddy) access my gmail account? [closed]

Why did secureserver.net (godaddy) access my gmail account? One day later...gmail reports suspicious activity...really? So...Why did secureserver.net (godaddy) access my gmail account? ...
3
votes
3answers
424 views

TLS library problem when connecting to Dovecot

I have a Comodo PositiveSSL certificate issued for mail.btcontract.com and I've set up Postfix and Dovecot to work with it in the following way: Postfix main.cf: smtpd_tls_cert_file = ...
3
votes
3answers
97 views

Security of remailers

A layman's question: If I don't err, with remailers or analogous systems one sends a message to a node of a chain of nodes, which collectively perform the entire transmission. However, the message to ...
3
votes
1answer
937 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) ...
3
votes
1answer
182 views

Amavisd-New and Google safe browsing

I am studying the Google Safe Browsing. How do I know that it is possible to intercept a content of an email via amavis, I wonder if I can, for each url found, consult the Google safe browsing? Do ...
3
votes
2answers
177 views

Email & Domain ownership?

Most hosting companies, such as mine (hostgator) give the following notice when providing a contact email: Email address that you can be contacted at. This should be an email address that is not ...
3
votes
1answer
2k views

My S/MIME certificate (created with OpenSSL) does not match my email address

I created a certificate with OpenSSL and following commands: openssl req -x509 -nodes -days 365 -subj '/C=DE/ST=state/L=city/CN=hostname' -newkey rsa:1024 -keyout mycert.pem -out mycert.pem ...
3
votes
3answers
210 views

How to check that an e-mail service provides encryption between the mail servers?

How can I technically verify* that the e-mail I'm sending from Gmail to Yahoo is encrypted all the way from Gmail's servers to Yahoo's servers? I know that it's advised to have encryption between the ...
3
votes
2answers
674 views

How can an email from a Yahoo address be sent through Yahoo without authentication?

I received this bounced email, yet I have a password with 105 bits entropy, my sign in history only shows local sign ins, I do not have any linked accounts nor apps, and I have not been to ...
3
votes
2answers
200 views

Can viewing an email message in Outlook 2013 install malware on my computer?

I routinely get spam messages which state "Your account for [Insert game here] has been flagged. If you don't click this link/send us this info/go to this website in the next 72 hours, your account ...
3
votes
1answer
112 views

Tracking down the source of email attacks

For the past week our company's IDS has been blocking 100-200 meeting invite emails per day from a specific client that are loaded with buffer overflows targeted at Exchange 2003. The payloads are ...
3
votes
3answers
400 views

Backup personal email on VPS - privacy, security and trust risks

FastMail.fm hosts my personal email account. Now they claim to have reliable backup services, but I'd like to have my own copy of my email archives. What I'd like to do is back up to my VPS, which ...
3
votes
1answer
597 views

What's a trustworthy S/MIME Certificate Provider that generates my private key in my browser?

I read this question on the process of generating a private S/Mime key. I looked at Comodo - which offer free e-mail certificates. I'm trying to find out whether Comodo generates the private ...
3
votes
3answers
671 views

Where to get/buy a CSR generated S/MIME certificate

I'm not sure if the question is eligable for this board as I ask for concrete service providers which can be kind of advertisement, but there is also technical issue involved, so I give it a try. My ...
3
votes
1answer
197 views

What is the security purpose behind the “enable editing” of MS Word?

Whenever I open MS Word documents from my email, they open in "Protected View" with edit options disabled by default. As per my understanding, the hyperlinks used in the main document would be linked ...
3
votes
2answers
730 views

Do fake-address generators work?

There are several pages on the Web that generate fake e-mail addresses so spammers can harvest them; the purpose is to fight spam. (Some examples of this concept under discussion and, in some cases, ...
3
votes
1answer
357 views

quizrace.com - Malware or just a game?

This quizrace.com quiz game is spreading like a virus all over internet forums and sites like 4cahn, minecraft etc (just google for it) - because it requires you to invite 3 friends to continue beyond ...
3
votes
8answers
2k views

Secure alternative to e-mail

After the announce that NSA conducts extensive metadata and traffic search on e-mail, it is clear that people looking for privacy and security would better abandon the system completely, since, by ...
3
votes
1answer
372 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 ...
3
votes
3answers
395 views

Shared hosting mail server, Thunderbird and encryption

In spite of much searching on the internet, I can't really get an adequate understanding of this topic, perhaps because it combines multiple elements. As a result, I'm really worried about the state ...
3
votes
1answer
170 views

Facebook changed the default email address for every contact. How do I mitigate the impact and risk?

Facebook created a problem for regulated industries and Registered Investment Advisers (RIAs) by changing the default outgoing SMTP address for every contact to a @Facebook.com address. This is an ...
3
votes
2answers
335 views

Securely storing (email) lookup database

Looking for suggestions on implementing a server-side lookup table, where the key is an email address. Goal: Keep these email address private, even if data on the server is stolen. Assumptions: The ...
3
votes
1answer
451 views

Is the Netscape SMIME extension still required in a certificate?

Every Windows 7 host has a Trusted Root certificate from Entrust that has the "Netscape Cert Type" extension (see image) I'm comparing inter-operable S/MIME extensions and see a pretty diverse set ...
3
votes
3answers
174 views

Resources/tools for controlling access to corporate email on smartphones

If one of our employees has access to corporate email on a smartphone I want to make sure that if they lose the phone then whoever finds it can't get at any corporate email on that phone. For iOS ...
3
votes
2answers
90 views

What is the point of secure email gateways?

We run Exchange 2010. Our edge servers run "passive opportunistic TLS" for 99% of the domains we communicate with. For a handful of domains, we have forced TLS on both our end and the other domain's ...
3
votes
2answers
196 views

How do web email clients store my passwords from other providers?

The situation comes down to this: When I enter in hotmail, it retrieves my messages connecting to other providers: they could only do so by using my email and password. Since I had signed in a ...
3
votes
1answer
227 views

Flood of email messages from @attacker.com

I've been getting the weirdest email messages for the last 2 days on my personal gmail inbox. On May 28th, exactly at 4:33 pm BRST I got about 2,000 emails that look exactly the same, here's the ...
3
votes
2answers
196 views

Random token and email confirmation key of 10 chars sufficient?

I have a function that returns random unguessable keys with the following characters: a-z A-Z 0-9. I have set the key length to 10 and I am using that for my form tokens to prevent CRSF and I will be ...
3
votes
1answer
156 views

Is BSI’s process good? (Informing email address owners that their address/password (of unknown/different accounts) was stolen)

The German BSI (Federal Office for Information Security) claims to have got a list of 18 million email addresses and passwords – supposed to be the result of identity theft. They allow to check if ...
3
votes
1answer
134 views

Webpage sent me my password in clear text can it be secure? [duplicate]

I registered for a webpage years ago and have been using it without issues, today I made some changes to my account and they sent me an email containing my username and password in clear text. I ...
3
votes
1answer
141 views

Why would an attacker try to guess random email usernames on a small domain?

My mail server has recently come under a very bizarre attack. Every five to ten minutes, a new IP connects to SMTP, attempts to try weird usernames (like pil, bennett, netscape, msfuser, desktop, ...
3
votes
1answer
81 views

What Information is Exposed When I Send A Message From My Mobile Device

When I send a text message and/or an email, with or without location services turned on, what information is available to the recipient of that message if they know how to read the data behind the ...
3
votes
1answer
244 views

3000 new contacts being added to gmail after receiving an email

Recently I realized that there are three thousand contacts with same name and email address in my Google contacts. The name belongs to an email that I have recently received and responded to, nothing ...
3
votes
2answers
246 views

What are the security or privacy issues with allowing users to forward email from our Google Apps account to their personal Gmail?

But we have a new employee that would rather all his email in one inbox. I know he can forward the mail to his personal account, send mail using an alias so that it looks like it is coming from the ...
3
votes
1answer
90 views

How to sign and encrypt mail using openssl?

I am trying to send and encrypt mail using openssl. So far, I figure I should use theese commands: cat ${content} | \ openssl smime -encrypt -inkey lib/me.crt -aes256 -subject "$titre (cs)" -to ...
2
votes
3answers
951 views

When to use SSL ? / When to send passwords via mail?

Self-Proclaimed Experts are quick to say that for every time a password is being transmitted from a webserver to a user and vv, you need to use SSL. Because there will be people each time trying to ...
2
votes
5answers
2k views

How can a non-technical user verify a message was sent “securely”? …or over TLS?

I have a situation where B2B and B2C communication needs to be sent securely and not visible to most SMTP hijackers. I don't care about conspiracy theories or NSA style attacks, but want to provide ...
2
votes
4answers
7k views

How commonly are SSL/TLS or S/MIME used by e-mail providers?

I was reading through different posts here about email security. After reading these I still have some questions. I understand that S/MIME can be used to transfer email securely between servers. ...
2
votes
2answers
482 views

Is it a security issue that Thunderbird only logically deletes emails?

I have several e-mail accounts configured in Thunderbird. I just wanted to move an e-mail from one of my e-mail accounts [A] Trash folder to another accounts [B] Inbox folder. Because the moved e-mail ...
2
votes
4answers
2k views

If a hacker were to compromise a GMail database

Assuming the systems that store the Gmail database is compromised what is preventing them from reading everyone's emails by looking at the data in the database? I assume nothing, and in order for ...
2
votes
4answers
285 views

Recently received a odd email

http://photomi.co.kr/httpcnbc9home-2.com.php?subpage216 Learn How to Make Money 0nline Fast __________________ . louanne visszakuldod Sun, 22 Jul 2012 0:33:42 Is there a way to identify what ...
2
votes
3answers
480 views

Security issues with email accounts

I am starting to become wary of giving out my email account to anyone, just by doing reconnaissance it is evident how easy it is to pull so much information from a person just by a email, There is a ...
2
votes
4answers
433 views

HTML Entities to hide Email Addresses

I'm on WordPress trying to keep spambots from grabbing email addresses that may be in The Content. WordPress has a nifty little function simply called antispambot() which will convert the email ...