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

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2answers
50 views

Does having a seperate e-mail account only for security, increase security?

In this article about increasing the security of lastpass the author suggests For additional security, you can have LastPass send security-related emails to a special security email address ...
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2answers
143 views

Google Accessed My MSN Account!

I just received a notification from Microsoft that my Microsoft account has been blocked because it's been accessed by an IP address that's never accessed it before. I received this notification as a ...
3
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3answers
350 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 ...
2
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3answers
944 views

Will SHA1 of Email Addresses Always be Unique?

We want to store data about a person without storing their email address, but we want to latter connect that person with their data upon them supplying their email address. Storing a SHA1 of their ...
13
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3answers
1k views

Is this “Domain Registration Service” email a scam?

I received an email to the email address listed on our website (it's a generic info@ourcompany.com to help "weed out" spam, whereas each employee has something like andreas@ourcompany.com to which I ...
2
votes
1answer
49 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 ...
2
votes
1answer
101 views

Fake email messages via List-Unsubscribe header

List-Unsubscribe email header makes it possible to recipient to automatically unsubscribe from the mailing list: List-Unsubscribe: <mailto:list@host.com?subject=unsubscribe&body=qwe> Free ...
18
votes
6answers
993 views

What needs to happen for email encryption to go mainstream? [closed]

PGP has been around for almost 20 years, but email encryption is not used by most 'regular people'. At the moment, with Snowden's NSA revelations (which should not be a huge surprise to anyone), the ...
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4answers
2k views

How do I encrypt the source and destination IP address, along with various parts of an email?

If the subject makes no sense to you, that's fine, it makes no sense to me. I've been tasked with securing emails sent from some devices, and I'm looking for advice on intelligent questions to ask to ...
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2answers
28 views

Is there any mail service accepting real id? [closed]

Most webmail services like gmail, facebook, yahoo,.. allow anonymous to create a mail address. If there is a security breach, user may lost important information on that address. They may add phone ...
0
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1answer
139 views

How do I determine S/MIME encryption used?

From what I understand it seems that S/MIME uses PKCS #7 which can handle various different types of encryption. How is the choice of encryption method made by the e-mail client and how do I know what ...
1
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3answers
25 views

Secure Custom Registration Links

I'm working on a website that allows a current user to invite another individual to be friends by typing in the non-user's email address. The non-user would then receive a custom registration url by ...
0
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1answer
24 views

list of PKCS7 certificate file extensions

RSA (the company) devises and publishes the public key cryptography standards. In those standards PKCS #7 is a standard which defines how to encrypt and sign messages using PKI. PKCS#7 defines a ...
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2answers
8k views

Spam that comes from names in my address book, but not their email addresses

I've recently received two spam messages that show a possibly worrying degree of knowledge about my contacts, and I'm wondering how concerned I should be. Specifically, the names -- but not the email ...
3
votes
1answer
188 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 ...
2
votes
3answers
693 views

Google Mail alert message. Hacker from China

I have had a red warning box on top of the page when I access GMail. It says that there have been three attacks from China: IP Address: 117.70.121.33 Location: Xuancheng, Anhui, China and ...
2
votes
1answer
44 views

Which information does a whois lookup reveal about the registrant of the domain?

A friend of mine recently got her Gmail account "hacked" because of a weak password (the same as her login..). While sanitizing her account, I removed the forwarding of her emails to one email ...
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votes
3answers
66 views

How can get email about latest vulnerabilities [closed]

Today my friend got email for the latest vulnerablility heartbleed. But i could not find where i can subscribe so that i can also get emails about latest vulnerabilities Can anyone please help me ...
3
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0answers
83 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 ...
11
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2answers
3k views

Paypal Account created using my gmail account

Some time ago, probably about 6 months, somebody hacked my email account and used gmail settings to forward my emails to him/her. I noticed that, removed the forward and changed the password. Now, I ...
0
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1answer
37 views

Email hacking/masking prevention

Can someone please explain to me how its possible that someone hacks a server and uses its email to send emails from a address thats not listed on the server and how to prevent it. When I look at the ...
0
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2answers
299 views

Registration Password

Is it best to create an application that allows a user to sign up with username and email at the beginning and password once you click the generated email sent to you or should the password entering ...
62
votes
12answers
20k views

Is Google overreaching by forcing me to use TLS?

Gmail was recently changed to require HTTPS for everyone, whether they want to use it or not. While I realize that HTTPS is more secure, what if one doesn't care about security for certain accounts? ...
1
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0answers
123 views

PGP-encrypted Email or SSL/TLS Webform for Responsible Disclosure Communication?

So it's a fairly simple question. When offering an avenue to security researchers for communication with us regarding disclosure of security vulnerabilities, what's the best way to do so? Assume we ...
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0answers
12 views

Remove specific header information sent from Thunderbird to Google servers [migrated]

If I'm using the web interface of Gmail, it doesn't add my ip address to the email headers (only adds the Google ip addresses) but if I use Thunderbird, it add my ip address to it and Google mail ...
6
votes
5answers
708 views

Is storing plaintext passwords for email accounts any less bad? [duplicate]

I recently found out that the company I use for shared hosting stores passwords for email accounts in plaintext (they mentioned this to me incidentally, while troubleshooting another issue). They're a ...
3
votes
1answer
60 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
2answers
80 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
232 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 ...
5
votes
5answers
482 views

HOWTO : Email encryption in a browser

I have read about encryption and I think it's a good idea for me to encrypt my email. I run ubuntu 12.10 and use Firefox for browsing. In my quest for learning how to use gmail/hotmail to send and ...
0
votes
2answers
110 views

Best practice for sending IP Addresses

IP Addresses are pretty common around the internet so they're often easily found in plain text. However, let's say there's a number of IP addresses configured on a server to allow access through a ...
0
votes
1answer
60 views

Which mail clients support PGP/MIME - is there an overview? [closed]

Does anyone know if there is a current overview (I only found ones from before 2006) which MUAs (mail clients) do support PGP/MIME? I wonder whether there still exist issues like "Outlook Express ...
1
vote
3answers
152 views

Email activation string with MD5'd random number and email secure?

For the registration on my PHP powered website, I require email confirmation. After a user registers, a string is generated with the following code and sent to their email address. $key = ...
0
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2answers
32 views

How likely would /var/mail be encrypted in a paid host? [closed]

I pay for a very basic web hosting plan, which includes a personal email address. Would the sysadmin of said host be able to read the content of my messages? How likely would my personal mail folder ...
4
votes
5answers
169 views

Can the wifi administrator in a shared office see mail sent through outlook?

I am hot desking in the same office as a potential competitor & would be using the same wifi. The building owner runs the competitor company. My question is, can the wifi administrator see mail I ...
1
vote
1answer
88 views

Passwordless login over email - security considerations

I'm proposing the use of a login system that sends a one-time login token (with high entropy) via email to the user. After using the token, the user receives another token via email and the previous ...
6
votes
2answers
515 views

The safest way to access GMail on mobile devices

There are three ways to access your GMail account on iPhone or iPad devices: 1. Use safari browser 2. Use Apple's default mail app 3. Use Google's Gmail app What is the safest way to access gmail ...
2
votes
3answers
65 views

Is it a good practice to include a download URL of my GPG public key in my email signature?

I was wondering if I can put a download URL for my recipients to get my GPG public key easily in my email signature. Is this a good practice? If not, what's a good alternative?
1
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3answers
937 views

How can hotels securely receive your credit card details (for a custom, one-off payment)?

A hotel belonging to a large chain (400 hotels in 60 countries) has just requested me to send my credit card details via standard (unsecured) email. I have negotiated a deal for accommodation with ...
1
vote
1answer
76 views

How could a third-party know the contents of an email I sent to someone?

Apparently, a third party knew the contents of an email I sent to someone within an hour after I sent it. The following possibilities come into mind: The recipient forwarded the email to the third ...
6
votes
2answers
5k views

Malicious users trying to create yahoo accounts with random emails at my domain?

Recently, I have been getting a string of emails from yahoo with people trying to create accounts or add email addresses @mydomain.tld to their account. I was wondering if anyone else has seen this ...
2
votes
1answer
2k views

Email Spoofed. Explain?

So, I think my email id might have gotten hacked. Can some one offer their comments and suggestions on this email ? It seems this email went from my mail id to my friend's email id. The subject is ...
142
votes
2answers
13k views

Don't understand how my mum's Gmail account was hacked

My mum (on Gmail, using Chrome) received an email from a friend's Hotmail address. She opened the email (very obviously a phishing email) and clicked a link in it. This opened a webpage with loads of ...
0
votes
3answers
81 views

Is it insecure to send an email from a PHP script to an email address on the same domain?

I have a php script that sends an email using mail(). The php script lives on domain.com, and it sends the email to info@domain.com. Is this a secure transaction? The website runs over https.
0
votes
1answer
394 views

Yahoo Account hacked, changed pw, spam still going out elsewhere?

Spam emails went out for an hour earlier this week bearing my Yahoo account in the FROM field and going out to all my contacts. I changed the password, then saw (via rejected emails sent to my Yahoo ...
2
votes
3answers
828 views

How to check if range of IP addresses are SPAM blacklisted?

While it's easy to check if a single IP address is blacklisted for SPAM using for example http://www.spamcop.net/bl.shtml, then is there a way to check multiple addresses at once? For example how to ...
2
votes
2answers
72 views

How to find out the email host of a vanity email address?

Assuming a person gets his own domain address, say, theperson.com. He then goes on to create a vanity email address with that domain. e.g. me@theperson.com. me@theperson.com may be hosted by the ...
6
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1answer
85 views

Reading older mails signed with a certificate that has meanwhile expired

A few years ago I have used S/MIME certs to sign (and encrypt) my mails. The reason for which I stopped signing was the following: My (class 2) cert was issued on Jan. 1st 2008 (just a sample). It ...
4
votes
4answers
206 views

Secure file sharing, instead of attaching files to emails?

Allow me to give some background information, so you may understand my situation better. We have been prone to sending emails to unintended recipients, many of which contained confidential data. ...
3
votes
1answer
101 views

Keep receiving delivery failures for emails im not sending

I have my own domain, and a few email addresses on it, including a catch all address, with Google Apps. Recently, my catchall address has been receiving "delivery failure" emails from many different ...