Spam is the use of electronic messaging systems (including most broadcast media, digital delivery systems) to send unsolicited bulk messages indiscriminately.
3
votes
1answer
54 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 ...
-6
votes
2answers
57 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
votes
1answer
192 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
votes
1answer
75 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 ...
0
votes
2answers
235 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
193 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
4answers
268 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
322 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. ...
3
votes
2answers
51 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 ...
6
votes
5answers
309 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
97 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 ...
0
votes
1answer
163 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
votes
1answer
83 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 ...
-1
votes
1answer
105 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 ...
-3
votes
1answer
128 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 ...
0
votes
5answers
111 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
vote
2answers
78 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
2
votes
2answers
357 views
How does the Yahoo webmail exploit work?
I got an email (referring to me by name) from somebody I knew a while ago and the email itself was just two/three lines containing a bit-ly link. Although it seemed like it actually could be ...
1
vote
1answer
66 views
Is a company responsible for a spam which mentions it?
Let's say I receive a spam which mentions a fictive company printmycatphotos.com.
If I follow the link, upload files, and finalize the transaction, clearly printmycatphotos.com has made some profit. ...
5
votes
12answers
1k views
Is there a true alternative to using CAPTCHA images?
Security is about balancing costs and risks, nothing is impossible to beat, specially not typical CAPTCHA implementations, but they do add something no other system seems to offer.
I've been reading ...
1
vote
3answers
269 views
Emails wrongly flagged as spam by filter, claiming suspicious URLs
My wife runs a small website (in Japanese) selling vintage products online. She's sending out emails to customers with details about their order, together with images of the products and links to the ...
0
votes
2answers
128 views
YouTube channel gone crazy!
OK, I use youtube just for listening music and watching videos. I don't upload, and I don't comment. Sometimes I do like some videos/comments.
But today I accessed my channel and I saw like 20 ...
6
votes
5answers
376 views
How do spammers verify the validity of a huge amount of email addresses?
I noticed that there is an email address validation method, that is to telnet to a email MX server and send rcpt command to the server.
But for this method, the MX server may abort connection after ...
6
votes
2answers
244 views
Will reporting phishing emails cause problems for the victim?
On GMail, I've received a phishing email from someone I know, and the email has been sent to other people the victim knows. One of the emails is claiming to be from their GMail address, while the ...
5
votes
4answers
1k views
Spammers bypassing the reCaptcha
I'm using recaptcha on a very simple forum registration page. The script first of all checks if the recaptcha code is valid, then it process. As soon i did put the website live, it got lots of spam ...
0
votes
0answers
23 views
Spoof email, spam and link bait? [duplicate]
Possible Duplicate:
What malicious things can happen when clicking on links in email?
Recently, I have been receiving a couple of SPAM emails seemingly from one of my friends. The email ...
2
votes
3answers
176 views
Odd spam in a forum
In the forum http://forums.finehomebuilding.com/breaktime/ (same forum that was one of the subjects of this thread) we're seeing a lot of "spam" of a curious sort. Obvious non-native-English speakers ...
4
votes
1answer
280 views
Mail server (sendmail) sends spam to innocent people
I asked this same question in serverfault but realized that wasn't the right place, I apologize.
Background
Server OS: Ubuntu 10.04
Mailing Application: Sendmail
Recently I asked about backscatter ...
2
votes
1answer
158 views
Who are these crazy referrers?
In my web pages' IP logs, I have recently begun seeing some very strange referrers, like this:
http://haddies.4t.com/tramadol-hcl/tramadol-hcl-200mg.html
...
2
votes
2answers
117 views
Are these email captchas legitimate?
The last week, I've been getting this kind of emails to addresses that I don't use:
Dear Sir, Madam,
For security reasons and as part of our ongoing fight against spam, it is our policy not ...
-5
votes
2answers
175 views
Is it possible to MITM between Google voice SMS/TXT Messaging
I have 2 spammers who won't stop spamming me via SMS once I post stuff online.
I would like to determine their location based on language, so if I were to somehow become a man in the middle and have ...
4
votes
1answer
1k views
Facebook page receiving improbable amount of likes from unknown users
A bit of an odd problem, but I'm not totally sure where to post this.
I am an administrator for a facebook page that suddenly began receiving hundreds of likes in the past few days. This trend began ...
-1
votes
3answers
160 views
How to find & remove twitter spambot?
Sometimes i can see that i've "retweeted" some tweets , that i actually didn't. And all of them spam to some gaming & pharma websites. I've got windows 7 64bit, norton internet security , using ...
3
votes
1answer
298 views
How to catch a SMS spammer who is using google voice to spam me
How do I catch a SMS spammer who is using google voice to spam me?
I have the google voice number and 2 of their burner emails with gmail. How do I gather enough information to inform the ...
1
vote
0answers
141 views
Honeypot for catching a spammer [closed]
I've been receiving more and more emails and now even TXT messages originating from google voice for inquiries of items that I've listed for sale on craigslist.
What I would like to accomplish: I ...
5
votes
4answers
1k views
Can most mail from *.ru be considered spam?
Is it safe to assume that most, if not all, emails from a *.ru domain may be considered spam? From a log of 30000 emails from *.ru, its all been spam (over two months).
0
votes
0answers
577 views
how to stop brute force attack to my email server [closed]
I have email server for my office, OS: Fedora12, MTA :sendmail, webmail: squirellmail .
I was accussed of sending spam to others recently .
I found at maillog on my email server , there are someone ...
0
votes
1answer
307 views
What user was this spammer trying to authenticate as?
I have a custom application that monitors and logs a user's SMTP session, and came across this spammer trying to use my MTA as a relay.
Is it possible to determine what username they are trying to ...
3
votes
3answers
1k views
Delivery Failure Notification spam protection?
My domain (example.com) has recently been targeted by spammers who are sending email (somewhere) but forging the sender as random-name@example.com. I have been getting flooded by delivery failure ...
1
vote
1answer
175 views
Is there any reason to not use DKIM, SPF, and SenderID because it affects plausible deniability?
Is there any basis in not deploying anti-spam (or deliverability) technologies like DKIM, SPF, and SenderID because it affects plausible deniability?
Some definitions to get everyone on the same ...
7
votes
3answers
9k views
How was my Yahoo email account used to send spams
My yahoo email account was sending spams at about 6:42pm EDT (the spams show 3:42pm PDT) yesterday. I realized it by receiving several "Failure Notice" emails for Yahoo was unable to deliver the spam ...
1
vote
2answers
187 views
Does selecting different email address rather than info@domain.com help preventing spam mails?
I think when bots gather domain names or they have it since before, they create emails like info@xxx.com or support@xxx.com.
Does selecting something different help to prevent spams? Does it affect it ...
1
vote
1answer
99 views
Reliability of DNSBLs for Stopping Forum Spam
I know that certain DNS blacklists are considered more reliable than others, in that they don't have as many false positives.
I run a forum that is known to be spammed, and I've installed a mod to ...
5
votes
3answers
418 views
Hashcash, is this really used?
I just heard about this term, is it really used? The concept does not seem new, is it used and/or implemented in current technologies?
4
votes
5answers
2k 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 ...
6
votes
5answers
2k views
How and why do people spam my website form?
In have a web form on my website, and someone keeps sending annoying spam through it. I know Captcha can block this, but why do people spam my site - what's their benefit?
How do they access my web ...
21
votes
2answers
654 views
What is the point of spam like this?
I fairly often happen across forums spammed with messages such as:
Arugula (Eruca sativa) is an quarterly green, pretended or roquette.
It's been Traditional times, overclever 20 flat has be ...
5
votes
1answer
95 views
How long can I store personal information on unconfirmed subscriptions?
I have a monthly newsletter. In my subscribe form I use a double opt-in method:
The visitor subscribes.
I send him a confirmation email.
If I receive a reply, I add him/her to my system.
In the ...
2
votes
4answers
276 views
How to prevent private data being disclosed to unwanted audience over internet?
Everyday, in order to subscribe to certain services on the Internet we are almost forced to disclose private data even though those services don't necessarily require it.
For example, I need to ...
2
votes
2answers
169 views
Is it unsafe to allow apps other than Outlook to send email via the Exchange server?
My application is a .NET Windows Forms client, one of whose functions is to allow the user to send personalised mailshot emails to opted-in recipients stored in the database.
The emails are sent ...
