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

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3
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1answer
31 views

Suspecious js file sent as email attachment

I received a js file with following code in my spam folder but I decided to take a look into the file. Do anybody of you know what does this code might do? var evl='';function nr() { evl = '}; ' + ...
2
votes
3answers
223 views

How secure is an Activation Email?

Is there any risk to an Activation Email? My ASP.NET Site is set up so that a user has to check their Email and click an activation link which is made of a GUID created as their user ID in the SQL ...
1
vote
2answers
2k 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 ...
1
vote
3answers
642 views

Are Facebook, Yahoo, Google, etc. hackable?

What I would consider to be hacking one of these services is something along the lines of cracking databases (or I think what would be databases). In reality, I have no idea how sites like these store ...
0
votes
1answer
41 views

PHP: Save e-mail address hashed or plain [duplicate]

I've been wondering about something, is it more secure to store an encrypted (hashed with password_hash) email address in the database, or just as plain text? I've google'd this matter and saw that ...
0
votes
0answers
28 views

How can I secure a reply-via-email system?

I am working on setting up a reply-via-email system (similar in functionality to what Basecamp uses) in which a user can reply to an email generated by the system in order to add a message to a ...
1
vote
2answers
190 views

Getting Loads of Emails 'linking' my account to Gmail accounts I know nothing about

I have just come out of hospital and have in the region of 30 e-mails from gmail over the past few days 'linking' a gmail account to my (hotmail) email address. I have not done this once never mind ...
4
votes
2answers
72 views

Is e-mailing personal information significantly riskier than transmitting the same information another way?

I've been asked by bankers, school administrators, insurance agents, car salesmen, realtors, you name it to send them all kinds of information over e-mail over the years. Everything from my address ...
0
votes
1answer
16 views

Possible for Lync clients to adopt Activesync-style policies?

My compliance manager recently told me that Lync IMs should be treated as e-mail for compliance purposes. This also made me realize that our other email policies (encrypted device, pin required, ...
22
votes
6answers
3k views

What real world benefits does PGP have over sending email with SSL/TLS such as with HTTPS?

I've been learning about PGP, and I asked myself, "Why?" For example, if I'm using https://mail.google.com, then what benefit would adding PGP offer that would justify it being used? I can ...
4
votes
1answer
58 views

Opening mail from IMAP with no risk for the user

I'm building a website for an association. Its aim is to, out of other thing, provide an easy mail manager to communicate with the member, stored in a database. This database is always up to date as ...
0
votes
1answer
35 views

Disposable mail for anonymity

Initially asked in bitcoin, I wanted to know how is it supposed to be used for anonymity. I mean that I need to register wallets and buy bitcoins. For anonimity, guitedlines recommend to use ...
0
votes
2answers
540 views

How to report abuse spam with X-AntiAbuse header which was added to track abuse?

I've received the following spam e-mail (with the link to viagra site): Return-Path: <silviani@server04.funet.co.il> Received: from server04.funet.co.il (server04.funet.co.il. [212.29.215.70]) ...
18
votes
4answers
2k views

Would 'spam' mail really avoid eavesdropping?

spammimic.com offers a service that 'encrypts' your mail as 'spam', the rationale being that all mail services automatically filter out spam, and so if you're wanting to communicate with someone ...
-1
votes
4answers
226 views

Creating a secure and encrypted e-mail service

Model People living in countries with totalitarian, oppressive and other threatening regimes should be able to use this system and have some degree of privacy when communicating. Objectives ...
2
votes
3answers
181 views

Could embedding website links in an email lead to more hack attempts?

My organization currently sends out emails directing our customers to login and view information on a customer portal site we have developed. The content of these emails is usually pretty generic ...
13
votes
6answers
4k views

How do I safely inspect a suspicious email attachment?

I received a pretty blatantly spammy email to my Gmail account. I'm not really sure how it made it through the spam filters, since it has all of the telltale signs. The FROM field is spoofed as ...
2
votes
3answers
63 views

Email Encryption

I'm hoping someone can point me in the right direction. If I wanted to implement email encryption within an organisation what would be the best way? I've been searching the web tonight but all my ...
11
votes
3answers
4k views

How does the hacker manage to spoof a different IP address?

For the last 2 days, +/- every 15 minutes, someone is attempting to sign-in to my online email account. When I verify recent activity, the IP address (and the corresponding country) is different for ...
0
votes
2answers
291 views

Metadata-free Email: How can SENDER directly, anonymously, and securely ask RECIPIENT’s mail provider to deliver a metadata-free email?

If I want to send emails to friends who use Google, Yahoo, AOL, etc., how can I currently use my local email client to send a metadata-free* email to them? E.g., is it possible to bypass my own mail ...
-1
votes
0answers
78 views

Why does Google consider Apple Mail a less secure mail application?

Why is Apple's Mail app consider a less secure email application according to Google? Why would accessing Gmail through my browser be more secure than using the Mail app if I'm using SSL and what ...
0
votes
0answers
49 views

Is my Postfix and Dovecot configuration secure?

Today I set up my first server with Dovecot and Postfix. These are excerpts from the configuration files: Dovecot: disable_plaintext_auth = yes ssl = required ssl_prefer_server_ciphers = yes ...
1
vote
2answers
79 views

is this secure: email account that can only be accessed by sending and receiving emails within gmail

i am creating a game of sorts where you use and earn credits to accomplish tasks. I am curious if you can effectively use gmail's security features to secure these submissions if the emails are all in ...
4
votes
1answer
177 views

How To Encrypt Group Emails?

I'm interested in encrypting e-mails. My very, very basic understanding is that I am to generate a private key, and share my public key with the message recipient (who will share his public key with ...
5
votes
1answer
251 views

Is email encryption, as claimed by ProtonMail, possible?

Is it possible to create a Web service that encrypts all messages, such that only the writer, and the person to whom the mail is sent, can read it? In other words, is the theory behind ProtonMail ...
5
votes
1answer
253 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 ...
0
votes
1answer
64 views

Security implications for email address and url changes?

recently, we are seeing some From:, To:, Cc: addresses being rewritten from user1@companyA.com to: ...
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 ...
1
vote
0answers
19 views

Encrypt Lightning event invite mails with pgp [migrated]

I use Thunderbirds/Icedoves Lightning add-on to manage my calendar, tasks and notes. When creating an event I can add attendees and send invitations to them, but they won't use their public pgp keys ...
1
vote
1answer
66 views

Test if an email address is spammer's

How can I test if an email address is a spammer's? I received a reply to my Craigslist post, with a gmail address in the email body. Craigslist uses some way to hide my email addresses, if I choose ...
4
votes
5answers
176 views

Using unique email address for online signups?

After reading the recent social engineering of a user's twitter handle, I started thinking about ways to improve my own online security. We can only do so much too protect ourselves because at the ...
0
votes
1answer
27 views

Is thread's auto-login from email implementation secure/good user experience?

As far as I can tell thread.com log their users in automatically based on a token in their emails, appended to the URL. e.g https://www.thread.com/1234logmeintomyaccount-forexample This is a really ...
0
votes
1answer
78 views

Clicked link on fake email which appeared to be from friend [duplicate]

I receieved an e-mail which at first glance appeared to be from a friend, I clicked on the link provided without thinking as we would often exchance links to sites. The link went nowhere i.e page not ...
3
votes
3answers
404 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 = ...
5
votes
3answers
636 views

How to Stop Email Spoofing [closed]

Apart from SPF, what else can be done to stop hackers from spoofing your company's email addresses?
1
vote
0answers
34 views

Webistes listing email address lists for spammers [closed]

Which websites would you usually check if you suspect that your company's address book has been leaked and is being used by spammers? I have identified https://pwnedlist.com/ for this purpose but was ...
2
votes
6answers
2k views

How are ProtonMail keys distributed?

There is a service called ProtonMail. It encrypts email on the client side, stores encrypted message on their servers, and then the recipient decrypts it, also on the client side and the system ...
1
vote
2answers
95 views

Is it possible to restrict email accounts within one computer?

can emails(e.g gmail)can be configured to open-up only in my laptop ,my operating system is windows 8 and is it possible to restrict my gmail account to be opened up only in my computer?Usually we ...
0
votes
3answers
52 views

How can I scan hosted POP3 or IMAP e-mail for viruses?

In our company we use a hosting provider for e-mails and it seems they don't scan incoming email against viruses. And our employees does not very careful about attachments... So we deal with virus ...
0
votes
1answer
21 views

Endpoint for checking if user exists in system

I have question regarding users point of view of this endpoint /api/user which requires POST data: email=user@domain.com and returns {"user@domain.com": "exists"} I am concerned if users might think ...
2
votes
1answer
240 views

Making a bitcoin-like secure mail protocol, how to tackle public keys?

I'm making a new mail protocol (probably already exists, but I've learnt a lot of things about security and privacy on the way). Here's the summary(much simpler if you know bitcoin's inner workings): ...
28
votes
10answers
6k views

How to explain to a customer that spamfilters don't catch everything

I used to work in a small office which provided basic desktop support for users. One day I had to answer a call from a very angry customer and he asked for my boss. He wanted to know how could one ...
5
votes
6answers
4k views

How did the spam email sender get my name?

Some time ago I bought something online from a reputable website. I paid through my credit card and everything worked fine. The thing which is important to note is that the name used on the credit ...
17
votes
3answers
2k views

How does Bayesian poisoning work?

This answer mentions Bayesian poisoning in passing and I've read the wikipedia page but don't feel I've fully grasped it. The first case, where a spammer sends a spam with a payload (link, malicious ...
1
vote
3answers
103 views

Potential risks when sending plain text E-Mails with encrypted attachments?

To ensure privacy in communication I encrypt and sign E-Mails using gpg4win. However, sometimes the communication does not work as expeceted (GPGTools and Outlook/gpg4win seem to be incompatible). In ...
1
vote
1answer
46 views

Tracking sender of Email via email address ONLY

Is there a way to track the sender and the location via the email address only. The problem is somebody has created a similar sounding email id to send content to my official circle with a view to ...
27
votes
3answers
3k views

Tell people that I can encrypt emails

I know that it is still not very easy to use PGP for an average user. However, the situation is improving (there are some easy plugins that can even nicely integrate into your GMail webmail). In ...
1
vote
2answers
1k views

Based on these email headers, where is this virus coming from?

I'm seeing a virus in our network with some strange headers. Sometimes they are coming (sourced) from a netscaler VIP, other times they seem to come from an Exchange hub server. How do I determine ...
1
vote
2answers
74 views

Viruses From Email Attachments

My company just got a worm. The specific one is beside the point, but I linked a couple pages that I think describe the worm / virus below. We're getting lots of emails to Outlook asking us to open ...
11
votes
3answers
11k views

Is a password protected PDF file safe for bank statement attachments?

My bank emails my monthly statement to me in a password protected PDF attachment. Is this a secure method of transmitting something as sensitive as bank statement?