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

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1answer
23 views

activate user account through email

I see a lot of people say to hash for the token on email verification when dealing with member registration. I am wondering, if the email token is only to activate the account and nothing else, ...
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2answers
68 views

How to prevent phishing mails from being successful? [duplicate]

I'd like to know what the best methods are to prevent success of phising mails. This question contains the following subquestions: What are the best ways to determine incoming phising mails (on a ...
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0answers
33 views

Clicked on an email from past acquaintance [closed]

I received an email from a person I met on a trip. The email asks me to click on a link to get an important file. I clicked because I knew the email address was from the person I knew. When I ...
5
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1answer
159 views

How to reject e-mails spoofing your own domain targeting your employees at Office365?

One problem Office365 users deal with is that an external SMTP server can spoof the domain of an organization and send e-mails to the domain users; where the e-mails appear to be from employees of the ...
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1answer
67 views

How to sell a new idea – “100% secure communication”, feedback wanted [closed]

I have thought of an idea (new product) to have 100% secure communication between 2 parties and would like your feedback/ideas on how to sell it. Oh, before you start that there is no such thing as ...
6
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2answers
104 views

Should I be worried if somebody uses my email to sign up for accounts?

I recently received e-mails from two services: Paytm and Uber. They both seem like legitimate services. However I have no idea why I received these e-mails or why somebody would want to create an ...
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2answers
255 views

Using email as individual validation

My company often sends orders to brokers and banks to execute certain actions (like buying x stock or y fund). In order to reduce bureaucracy we are considering send a list of emails that are allowed ...
1
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1answer
103 views

E-Mail made in Germany. Better than traditional ones like Google or Yahoo? [closed]

A friend of my mine who lives in Germany called my attention to a so called "E-Mail made in Germany" (EMiG). Since the country is well known for exporting high quality products, I decided to take a ...
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2answers
46 views

Dedicated domain for email registration

With the recent surge in compromised user information on web services, I have the following solution in place for myself: Registered a domain with an obscure domain name. (actually a bunch) One ...
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0answers
11 views

Do spam filters work if I use a forwarding address? [migrated]

I made the mistake of replying to a linkedin connection request with my main forwarding email and have started getting spam after years of 0 spam (have blocked linkedin requests now). I have been ...
55
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6answers
11k views

Is gmail-to-gmail still insecure? Why?

I have always heard that email is an insecure method of communication; I assume this has something to do with the email protocol itself. But when sending an email from one gmail account to another, ...
-3
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1answer
97 views

Self-Destructing Emails [duplicate]

So I just recently started reading into Self-Destructing emails trying to learn how they work but I am unable to find much relevant, technical information. I'd like to know exactly how this works ...
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1answer
70 views

Reasons why there are no web based unified email clients (with OAuth2)?

There are plenty of mobile applications that you sign into with different accounts to retrieve email, contacts, and calendar (such as CloudMagic), and a couple desktop clients (such as Inky). Yet I ...
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0answers
23 views

Use OSSEC to monitor emails leaving at too fast a rate

I'm new to using OSSEC. I'm looking to monitor postfix running on a couple Ubuntu servers. We have had our servers send out ridiculous amounts of spam after an infection, and I'm trying to get OSSEC ...
2
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1answer
41 views

Email security on a Windows phone

Let's say I set up a Microsoft account on a Windows phone and use the associated built in email client. If I send an email, would it be send in plaintext. On wifi, if someone is sniffing the traffic, ...
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0answers
42 views

USA PATRIOT Act and Office 365

I have a local Exchange server, which has several spam and email reception issues (Due to an expired subscription to a spam filtering system). I was looking at the Office 365 Exchange Online ...
3
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1answer
59 views

Is it a bad idea to forward a suspicious email with an attachment - even to a secure address for analysis?

The more servers the message passes through the more potential of the attack to execute successfully? (0-day etc). Or is this paranoia? Instead: Delete, disconnect from network, and phone security ...
2
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2answers
68 views

Is it appropriate to block a sender's email address

This morning I received a mail from Apple suspension UK <do_not_reply@apple.co.uk> with the subject Apple "Unauthorised transaction alert". The mail was sent to one of my company's distribution ...
3
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3answers
150 views

Would trolling the people behind scams help decrease scamming? [closed]

It is easy for smart people to identify scams. This isn't an accident, phishers want stupid people. Sending the emails is the easy part, getting their money is what takes effort. My question is, ...
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0answers
15 views

Do 'Unsubscribe' Links Work in Spam E-Mails? [duplicate]

Recently for the great fun, I was reading through my spam folder. I found that on 99% of messages there was a very small link on the bottom that said (roughly) We value your privacy. To unsubscribe ...
14
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3answers
783 views

Why is encryption (or signing) of long lines in E-Mails with PGP problematic?

I am using Thunderbird with Enigmail and OpenPGP to encrypt and/or sign E-Mails. On many occasions Enigmail complains that I have too long lines in the mail and asks how it should wrap them. However ...
4
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1answer
44 views

Passive fingerprinting of email client, based on email headers

Are there ways to passively fingerprint (infer) the operating system or mail client that an email sender is using, based upon the headers of an email from that sender? I'm familiar with passive ...
63
votes
2answers
9k views

What is the purpose of these weird non-spam emails?

A mail made it through the spam filter and i wonder what the purpose is. It is not spam. Tracking? But how? Who? and why? In the source code there are this weird passages like ... =EA=85=9F ...
5
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2answers
482 views

Yahoo mail hacked - how to recover, how did it happen and how to prevent?

I was yesterday informed by some friends that they received spam mails with my name as sender. The sender addresses look like firstnamelastname@spacepc.pt and firstnamelastname@revistaplot.com with ...
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2answers
85 views

LAMP MailServer without SSL… so what's the problem?

I want to set up a MailServer on Ubuntu for my website, and access the email from my POP3 client without enabling SSL encryption (I suppose the SSL is used to encrypt the password?). My questions ...
25
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3answers
4k views

How can people send me spam emails from the future?

Is this an exploit of the email system of some sort? I receive a great deal of spam every day, and my accounts in Yahoo and Gmail sometimes show me spam emails from the future. Yes, the future. ...
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0answers
30 views

How should end users respond to Earthlink's “Allowed Sender” feature when blocked by policy?

Some of our users are requested to click on an Earthlink antispam URL below https://webmail.pas.earthlink.net/wam/addme?a=USERNAME@earthlink.net&id=<SOME GUID> However our firewall ...
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2answers
53 views

Is there any way to formally ensure privacy to my clients by technical means?

Imagine you are a software solutions company. One of the solutions you provide are domains, email and forwarding mail to their Gmail accounts. After we have created a domain and several email ...
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1answer
51 views

Resellers and web admins and email privacy

Maybe I'm missing something, but this is "my problem". If you ask some company to create some domain for you and several e-mail account with that domain and forward that information to your gmail ...
5
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1answer
235 views

Security of Yahoo's new authentication: On-demand password

Yahoo is trying to remove passwords from authentication and use on-demand password authentication system instead. I wonder how this new system will be secure? Even if somebody steal your mobile can ...
2
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1answer
32 views

Multiple OpenPGP encryption keys signed by a single certificatation key?

Say I have several different email accounts and I want to use a different encryption key for each of them but still have them all certified under one identity. Is this a good idea and how would I do ...
0
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1answer
133 views

How dangerous is checking email on open Wi-Fi network

How risky is it to check my email on my smartphone on an open Wi-Fi network (i.e. Starbucks or Old Navy)? Is this only risky if someone is snooping? Do they have to be there, or can they leave a ...
3
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1answer
42 views

Question about email app in Python and security

I've managed to get my tiny little app to send an email with a click of a button using this code (this is just the email part): http://pastebin.com/nR5g28ct But to avoid some error, I had to allow ...
2
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1answer
47 views

Are there any examples of when personal email data can be brought into a lawsuit involving a corporation?

If users bring their own device (BYOD) and they have corporate Exchange (or Goodlink email) on that device, could the other email accounts on that device be open to a legal search? Would the SMS ...
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0answers
87 views

How can secure email be used while avoiding government attention?

Presumably all unencrypted email is available to federal agencies including IP addresses, header information, and email content (eg, through SMTP with or without SSL and TLS -- thunderbird has an ...
2
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3answers
120 views

Tracing an email's MAC address

Can someone trace the MAC address of an email to the point of origin if the email address has been deleted? I received an email from an unknown sender regarding an issue at my work, and when I tried ...
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1answer
119 views

Is Google intercepting my emails? [closed]

I was recently checking my Recent Activity under the "Details" tab inside my Gmail inbox, and I noticed this IP Address, it's not my IP: I proceeded to look up the IP and it's located in Mountain ...
4
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1answer
42 views

How accurate the recent activities location provided by Microsoft emails

One of my emails is on hotmail.com provided by Microsoft. Recently, after few suspicious incidents where my computer was hacked and many other accounts, I changed all my passwords including this ...
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2answers
119 views

What stopping someone from offering distributed and encrypted email? Just like Bitcoins

Basically Email service that is ran over a network, so it's not owned by any one entity. Everyone can use it and send email to someone else. All messages travel through a web of interconnected ...
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1answer
40 views

indicators of compromise via email servers

Malicious files are commonly infiltrated on to the network via email attachments. Besides awareness and education to my staff to refrain from clicking on suspicious attachments, I would also like to ...
8
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2answers
4k views

How to prove my Gmail has been hacked?

I believed that someone had hacked my Gmail because they were using information contained within my emails in an attempt to try to convince me that they were psychic. I told them that I didn't believe ...
0
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1answer
23 views

Under what circumstance might your email not make to your intended recipient? [closed]

I'm asking because it's one thing to eavesdrop on someone's email, but it's another thing to prevent your email from getting to your recipient. For example, I sent an email to a colleague and he and I ...
5
votes
1answer
249 views

Is my ISP trying to impersonate google?

Everything has been well for years and today I wake up with this: A warning on EM Client (also got the same on my iPhone) that the certificate for googleapis.com isn't valid. And the certificate ...
3
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3answers
111 views

Email injection in simple terms?

Can someone explain why spammers use email injection? I am a victim and was wondering if there was any other malicious point besides annoying me and filling up my e-mail?
0
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0answers
116 views

Why is my website getting spammed?

Does anyone recognize this type of spam? NAME: Bagas EMAIL: dq95zxm7l@gmail.com PHONE: JCBUIR6ulwtO COMMENTS: I must express apaotcipeirn to the writer for bailing me out of this particular ...
3
votes
1answer
124 views

How was my email intercepted? [closed]

I've recently sent an email to a non-Protonmail user, using a code phrase. Someone on the recipient's home network was able to intercept the email and responded to me in detail as to the content of my ...
48
votes
6answers
8k views

Why do security experts like Snowden use email services like Lavabit and Hushmail rather than self-hosted email?

Why would anyone like Edward Snowden rely on 3rd party services like Lavabit or Hushmail to host his email? I mean it's very easy to set up a self-hosted email server. What you need: Rent VPS (even ...
4
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2answers
114 views

Reset links in password expiration emails

Our organization is rolling out yearly password expiration to our 40,000+ users this fall and we have been socializing this change for some time now. However being such a large organization, our users ...
3
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1answer
61 views

How safe is it to use shared SPF record domains?

I'm wondering the following, what if shared SPF records like below are used? v=spf1 include:_spf.google.com ~all v=spf1 include:spf.mandrillapp.com ~all v=spf1 include:servers.mcsv.net ~all Can it ...
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2answers
81 views

Is it possible that the person I write to will see the email before I write to him?

Is it possible that the person I write to will see the email's content before I reply to him? If I got an email and I answering that email, is there any feature that can cause my reply to be seen by ...