Spam is the use of electronic messaging systems (including most broadcast media, digital delivery systems) to send unsolicited bulk messages indiscriminately.

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141 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 = ...
3
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1answer
103 views

spam: several secret inboxes targeted at once. risk or coincidence?

I have a domain that is only used by me, with several inboxes in the format aep-x-company@domain , where i replace 'company' with wherever i sign up. This way i can detect when someone sells email ...
0
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1answer
85 views

Is it useful to use 'dot' and 'at' in email addresses in documents on the web? [duplicate]

My question seems to be a mash up of two questions. The first is that over at TeX.SE there is a question about creating PDFs with crawler resistant email addresses. There are some good answers about ...
20
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4answers
2k views

What are spambots doing with unintelligible login attempts?

After constantly being under attack in phpBB, I created a new forum by hand, which successfully prevents spam bots from registering, and I get a report for every failed login attempt, telling me the ...
0
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2answers
45 views

Email rejected by the server [closed]

Emails from site such as Gmail and Yahoo are rejected from secureserver.net server and treated as a spam. Can you help me?
5
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3answers
391 views

How did the spammers get this address?

A few months ago I configured a test mail server on Amazon AWS, all legit. I used a new address to my catchall-domain (something similar to, but not exactly, ...
2
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1answer
75 views

Proper way to target spammers on pages such as user registration, password recovery, etc

What is the best way to handle spam on pages like user registration or password recovery? I am not asking about whether to lockout a user for a few minutes or how to put up a captcha. I'm interested ...
8
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4answers
263 views

Best practice for informing a website they've been compromised?

I've received a spam email that claims to be invoicing me for some service in New Jersey, USA with whom I've not had any dealings. The email includes a link to a zip file that is hosted on a greek ...
5
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3answers
126 views

SPAM Email Analysis

What are the steps you would follow in order to identify in an email is a SPAM/SCAM/Phishing attempt? The reason I am asking this question is that sometimes very well crafted junk emails manage to ...
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2answers
174 views

How to Check if my mail is classified as Spam

I think several of mails are classified as spam.But Gmail and other Public Email providers has no issues. It might be a false positive cases with the associated tools Is there a tool or a way by ...
3
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1answer
122 views

What kind of requests are those?

I receive a lot of requests like this: ip-10-80-XXX-XXX.eu-west-1.compute.internal:80 110.249.208.XXX - - [11/Dec/2013:10:27:17 +0000] "GET ...
2
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1answer
79 views

Risks and prevention methods associated with flagging or downvoting?

Similar to bots posting spam posts and blogs is it possible that bots with legible registered accounts go around the site flagging or downvoting everything on the site. If yes, what can I do to ...
0
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2answers
89 views

Is there any any security threat due to advertisements?

I was working on my localhost in my computer but I was connected to internet. Recently I downloaded a few music files and since then advertisements are getting popping into my browser through which I ...
0
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1answer
70 views

can one stop spam with my name but not my address [closed]

IS there a way to stop getting spam that is from my name but not my e mail address I am receiving many spam letters using my name but different e mail addresses.
0
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1answer
92 views

How to investigate this anomaly?

According to the IT managers, this problem is neither at the server nor at the client but is suspected to be somewhere inbetween e.g. some DNS server that has been infected. Do you recognize this ...
51
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4answers
2k views

Is using 'dot' and 'at' in email addresses in public text still useful?

When entering your email address publicly, a practice is to replace . with text dot and @ with text at. I assume that the reasoning is that this way automatic email-collector robots won't match your ...
0
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1answer
105 views

What is the attacker trying to do? (maybe just spam my form) [closed]

I have a PHP-included form that tells me the URL the customer was visiting when they fill it out. The content of the message was either jibberish or poorly handled by the form. (it looked mostly like ...
1
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4answers
154 views

How can these spam emails be accessing email accounts on respected domains?

Today I received a spam email from juliew@mchs.org.au requesting to contact Harry Black about a charity project. His email address is harryblack2013@rogers.com. After I had done so and fallen for the ...
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4answers
151 views

Spam title includes unusual words from my recent emails

Occasionally, I get spam that includes in the subject line an unusual name or word that appears in other (legitimate) messages I recently received. Perhaps a coincidence, I thought, until it happened ...
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2answers
200 views

Email spam targeted at a pair of users

Two users on my domain are receiving spam emails that have both of their emails in either the To: and/or CC: fields. There are many other users on the domain, but only these two are receiving spam ...
6
votes
3answers
594 views

Why does a spam sms contain a link to an email address?

A colleague of mine just received a (spam) sms with this message: Congratulations! Your mobile have won $1,000,000,00 Pounds with Draw# 294 64/2013. For more info & claims, contact our ...
0
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1answer
60 views

Is there any anti-spam solution focused on preventing Replies from hitting spam?

If I were to reign in the problem scope of this other question, is there any proposed or current RFC focused on preventing replies of previous messages from hitting SPAM quarantine? The previous ...
1
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1answer
86 views

It it a good idea to whitelist inbound email using a Hash on the address? (Similar to BATV, but with DKIM)

Problem Statement I'm looking at ways to ensure that business partners, or emails from trusted senders, never get quarantined; ....in other words prevent "ham being seen as spam". Ideally this ...
0
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1answer
145 views

Website Link Spam Hacking Protection [closed]

I've recently been employed as a junior web and software developer for a small company, and noticed that their Home page has had links to completely unrelated sites added like spam to the index.html ...
2
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1answer
135 views

Should admin make SMTP to do sanity checks?

Open SMTP relays are bad. The major email providers such as Gmail and Yahoo do some sanity checks such as the following at the SMTP level to prevent spam to arrive the users' mailboxes: $ telnet ...
2
votes
3answers
801 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 ...
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2answers
100 views

My VPS has been shut down now again for the second time for TOS violations, and I really need some help. [closed]

My VPS has been shut down now again for the second time for TOS violations (email spam), and I really need some help. I have been battling with my server being attacked for over a year now. Most of my ...
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1answer
2k views

A “new domain registration” spam?

About 6 days ago I purchased a new domain under .org TLD from a local registrar. Few days later, I have received this strange message (which BTW fell to Gmail spam bin), which looks like some kind of ...
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votes
1answer
139 views

Spam mail from my yahoo mail [closed]

Couple of days back spam mail(screenshot link) was sent to all my contacts from my yahoo account, and in my account activity page there is a yahoo partner logged in, from Peru (screenshot link) during ...
84
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10answers
6k views

Why is blog spam always written so badly?

Some spam messages fresh from my Wordpress filter: Asking questions are in fact pleasant thing if you are not understanding something totally, except this article gives good understanding yet. ...
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1answer
127 views

Stopping spam and worms with SPF [closed]

Sender Policy Framework is a system to detect spoofed emails. From http://www.libsrs2.org/overview.html : WHAT EMAIL FORWARDING SERVICES NEED TO KNOW ABOUT SPF To combat spams, worms, and ...
3
votes
0answers
171 views

What are the statistics on how often client form submissions fail CAPTCHAs? [closed]

We've got plenty of argument that CAPTCHA can easily be beaten, and that they introduce usability problems to users. People say that because they can be broken, they shouldn't be used. So if you've ...
3
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2answers
287 views

Is there a dictionary of visibly similar Unicode characters for Spam processing?

I have spam that looks like this: мy вυddy'ѕ мoм мαĸeѕ $74/нoυr oɴ тнe lαpтop. ѕнe нαѕ вeeɴ lαιd oғғ ғor ѕeveɴ мoɴтнѕ вυт lαѕт мoɴтн нer pαy cнecĸ wαѕ $19420 jυѕт worĸιɴɢ oɴ тнe lαpтop ғor α ...
4
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1answer
99 views

Is access to the caller API in mobile phones a real security threat?

From time-to-time I receive "Unknown" caller on my mobile phone. I do not want to answer those calls as I do not trust the identity of a caller. I feel safer if I can see caller name or at least ...
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votes
2answers
104 views

Why my Email are received in the spam folder? [closed]

I am using Mass email marketing or shoot out email campaign but my subscriber received my mail in spam folder what are the reason of this and how can I prevent them. Question reference: Email ...
3
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1answer
221 views

Odd user registered and strange behavior. Is it sinister?

I am running a number of web sites. They are all Drupal based, if that is relevant. Recently I have noticed something odd. All my sites have a user registered with the name "zctonglin". I presume ...
2
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2answers
220 views

Barracuda antispam access to active directory in dmz : opening port or not?

I have a Barracuda Antispam unit and look to use recipient validation with active directory to stop sending NDRs (non-delivery reports) when we are being spammed. What I see on the web is people ...
1
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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
3answers
962 views

Security concerns with malicious NFC tags?

I was reading this article from Life Hacker, How to Automate Your Phone for Every Room in the House with NFC Tags. The idea is to place NFC tags around your house, car, etc. so that you phone will ...
6
votes
3answers
2k views

Finding spam sending scripts?

What are the tips for finding email spam sending scripts? I ask because usually I hit a wall in shared hosting environments, so I ask this question as a way to get some insight from others. What I ...
10
votes
1answer
659 views

Is there a spam storm? [closed]

I realize this is a bit off-topic, but don't know where else to go to ask... I've gotten an enormous amount of spam in the past 24 hours (hundreds), even after some relatively good spam filters. ...
5
votes
2answers
73 views

What information should I provide to a website or organization when notifying them that their domain may be sending out spam?

Over the past few days, I've received several spam emails coming from the addresses of a school district. I don't know much about email message headers, but since they contain numerous references like ...
9
votes
5answers
1k 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 ...
0
votes
1answer
238 views

Can a Javascript - WebGL proof of work system prevent website spam?

Is it a good idea to come up with a Javascript-based Proof of Work system to reduce spam on forums, and other websites? This idea would be similar to HashCash, but the computation would be based on ...
1
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1answer
339 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 ...
0
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1answer
133 views

What is this spam bot trying to do by filling in my PHP forms randomly? [duplicate]

I have been getting alot of bot spam lately. The most recent one is this as the body: already to standards Address is is required return ? then with local include accurate Another they in ? and ...
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1answer
183 views

How Do Spammers Exploit Mailto Fields?

I was interested in finding out how spammers can target my Mailto link to send out spams. mailto:foo@domain.com?subject=foo Is it just a case of appending ?from=foo?to=victim1;victim2;victim3 to ...
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votes
1answer
162 views

How much can you trust a (banking) site after it spams you? [closed]

How much can you trust a company that send you spam ? Many people, after registering with Moneybookers(Skrill) started to receive spam that included their real name (as inputted in Moneybookers ...
1
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5answers
246 views

Good ways to prevent spammers from registering [duplicate]

Possible Duplicate: Is there a true alternative to using CAPTCHA images? Since everyone hates captchas what are good alternatives? I'm looking to prevent the automated creation of accounts ...
1
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2answers
230 views

mod_spamhaus whitelist example to allow a range of ips

How would an example whitelist look like, that would whitelist a range of all IPs from 123.123.0.0 - 123.123.255.255 ? I have the whitelistfile in /etc/spamhaus.wl