Showing posts with label spam. Show all posts
Showing posts with label spam. Show all posts

Friday, August 4, 2023

Bitcoin scam and blackmailing

You probably found this blog by doing a web search after the following ids after receiving a mail from a Bitcoin spammer. They are also used in Nigerian (419), sextortion and romance scams.

1A4p8F5pS79Voi4MD3JP2Si1RaeMVodooD
1KfYK9Nve88jsEbefRGKKV93yVp2bef2ro
1MFQZKZ4YgT8wQzv1dt5GQcEr7bqDYuuF3
15Aq9jP5ATC5baaYuh8CU3iyQegDnsaDWT
13KFphsUk1MQCzr1gcyHpzbfadb37fdf3m
19gjxoZ2x8xzNC18FYtLxCL3FWRi15cP39
1FzffEZwQYMqRp38NAYXD3Zo8RRsjbLYsa
3LRH7Nsdp23m9DwEGQZxnYXPBUFfsFJLDL
1FRoqN2qUEqNKM7e2xwNd9yoGxx5LSaeao
1Pg24ty78etsG23AqqbwkJUxANNNxhc96W
32jEPoe7XcoXv3LajJs1StF7o3jUfjsTHg
1qpyxyYSeQ3rUTQzhispMcuKzWRn9uqvC
bc1qu4kdetl2zjz0l4gkjxv4237jcpu6t5gal4wqna
3PfP7RRHi58R5qSCj9ZzXhCok1KDdpvsT9
bc1q35k52yyusmhmrlr7pjegvd5llm4lr9elprwspf
12kwSrHUUnZ6Yhxp2k6qckkidW5d8971gv
bc1qtmqm2rvyayka5svg7qm0x93xmwxut5luwn4wfa
bc1q5hs655qx0ndm8nqdqyl200uthp42nma8a4v43v
3m7bey1ugmwgx3cubn5viei53cikd6qs65
bc1qfagdmjeqdmqf0s2mlkm3u4edghp8anw8daxrhx
bc1q5mdrw6zsnumwk7hsy4vyd2c528tugzdyq3u2sa
1PNWAfqoNQhTR2jCpcSPL6P5XrCxCofqB3
1LJ6vaXHoG7qk4mKvqMGGMFDjTDY5BHxqQ
1J7Vjrw1mfUcm3nobDz27WyMaWibDymSoc
1CB31kKUB6kA1cQE3Hyz7P2LqKL93nd8Wi
bc1qtt7h6zlgk5f44j9nnay5udzys5pq2kyw3etmmv
bc1quj26a9nm3nqa9ey30gt9jj5hepavsqwp47c2nu
1KJzkYG937PmUy3QF9PFta3TXd17cXcweC
13jKLyAFhjVRiWyg1TTPVjweFBAyUyBiy8
TP36d7HFdu4xGerTUeYRm1rQmjnXY9TkgP
14wjFULmPSW9X5o6LRfLvCpDDaHXYstYeZ
1ND3JTwUaYWhDjTuaAK8idmpmuRQGqAkB1
3FfyxALPEw8tR5YNPh2eka4t1ytBqUtjEt
bc1qmer78dujeg5wq5kjawtrvrqdccec9lj3w5pltn
1MW4maqRuqi62YiRNMaBiHT65WJJMEAvQw
1MXxjLGvPjZSKsr1RhYfdw2DCE7pySUAA2
1HB6CPkMo43UmZCNR7mmReXqpDNtfEg85L
bc1qyvku5uq63zhvwmhtf58rh0jca97cfvg8d83usk
1NYCdN9eBXhT4tPSpu4EhpjC9gHXLzipLL
bc1qfashs642ung87z27gvts0wus8zrkmvdxuqpuk2
16QmBYmFimib3BgsU9j1cdKo3SsZEndtzn
13CeboyoiqUnJ4wJuujQcF8gMdWRmRrCzn
12djMjPKd6Bv2BaXUNVuAjnuusKA66qCkX
16hvsuvmPt65A6ahE9hf3RbhrJzsnuEcww
12kieSEdCV4ikxdXXXC23ZsDcNmmKrRmwA
1665CsfFELrfiiubFZtLsGHGuqbUz1wXcz
133gp7wGpKFaB2C593B2MCk2G4abYnEj9j
13dk8JbVeEKGmHq7aevbdVxjg2cHYFT4kg
16aqr3rXxCtxa8AK3ErftnBQLfzyyhjpXJ
17nRB68nKvFGgKWJom2R6NZJDARK3BDuNg
19A5rdrxb4MREtyGWo944uRoNDBxBPNNG8
1DJ1mLv7zeCuTpK3Fq858SAL5h17nSixpP
1FH4HU6xhQnCbzYosP2N5HAa5aPJd7XxYZ
1FH4HU6xhQnCbzYosP2N5HAa5aPJd7XxYZ
1Hjpu99iHc3oi55ZJKf6RHhKbwit8vEzTS
1KLWVPD2UQJ7riZuaUBF6u4u8GTzhcypHo
1L6XxPRuLJdr6JCqw8dwNUm1wFLisrGREL
1LsTK4bKaUGMXgbqo4n3Vc7quu6UvATjfz
1MZ6avTVhzxsyZvyNxFVWMutZwjQUhLpYo
1xPr18gM8YKsaiUkGz9MgpjtwcBQcME2i &60; There seems to be a missing digit
33FY4c6TuCkS71Jg2PZAqCvpG5pMyFhdHk
37nDMVLyBafNVj9Jok5SBUdDzkpJ3Ubr2B
3CVucYjbRnbRKZ7AaSJQS1h64t5mKzqvxp
3EtS5KTmQJrjKDiTmPnhYbJqk5H3HAoWY4
3QHNJ3rWKFFppYLaqNqw4rfF1qZEKgKFYQ

Bitcoin scam often comes as blackmailing. The scammer sends a mail claiming you have been visiting a porn web site. He adds that while enjoying yourself he hacked your computer and recorded a video of you from your web cam while having fun. There might also be a password in the spam as proof. He threatens to send this footage to other contacts he found in your address book and to other sites in the internet, if you don't pay a certain sum to the given Bitcoin id. But don't worry, this is usually not true, although an internet newbie might believe this. It's just a random shot to make money by scaring mail recipients. Don't pay, delete the mail.

There might be a slim chance that it is true though. If the password he mentions looks familiar, and is not something like 123456, he might actually hacked you. Check your computer for malware. If you find evidence the computer is infected, backup data like documents, videos or audio files to an external drive (USB stick or SD card) and wipe the hard disk clean before installing your operating system from scratch. Yes, that might be painful, but in my opinion better than knowing your are watched.

Thursday, August 26, 2021

WHATSAPP numbers of spammers and scammers

You probably came across of some Nigerian scam, where a rich prince asking you to take his million bucks for a small fee. Nigerian scam is older than email. It was done by letter post before that. These so called 419 scammmers went digital decades ago. Pretty new is the use of Whatsapp numbers, where as they also still use normal phone numbers or phone numbers to send SMS messages (text messages) to. If you found this blog then you probably checked Google for a certain Whatsapp number coming in an email. Just don't call them, it's scam. Unless you want to have some fun by stealing their time.

+22990334993
+23409122114518
+2349014632264
+33758305355
+18888832323
+972526171988
+22959224865
+18045347182
+22879873046
+15022362851
+971556474204
+13059125439
+12014923080
+306941514757
+6281379221881
+13159926276
+4915216474006
+6281276008493
+33780865361
+79967201170
+4917683865226
+85566260526
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+8613528796850 
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+5511949942058 
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+541127405136
+35796690063
17202488130
+9128164053
+447734493260
+447452266889

Thursday, April 25, 2019

How to prevent VOIP Spam

What is SPIT?

Spam over Internet Telephony (SPIT) is telephone spam that is transmitted over the Internet Protocol using IP (Voice over IP) telephony. Telephone spam refers to unwanted telephone calls that are automatically and in large numbers recorded. Phone spam is similar to email spam, but is currently less common and requires other safeguards due to synchronous communication.

How abuse takes place

IP telephony, as well as email and other Internet applications, is prone to being abused by unwanted messages and connections. Call machines can be used for telesales, telemarketers, for alleged winning messages, or as phone calls. In particular, IP telephony offers this freely available software (such as Asterisk or SIP) and inexpensive options to automatically sell a large number of calls. The IP telephony is often based on the Session Initiation Protocol (SIP) [1] for setting up, controlling and reducing the telephone connections. After establishing a SIP session and accepting the call by the called party, a pre-recorded spam message can be recorded. For pure lock or ping calls, no audio data is transmitted.

Large numbers of unwanted and automated phone calls

SPIT is characterized by a large number of unwanted and automated phone calls that are transmitted using the Internet Protocol. The caller (spammer) tries to establish a large number of connections using suitable software and plays a recorded message as soon as the called party answers the call. Using the widely used Session Initiation Protocol (SIP), the connections to INVITE messages are initiated and then configured and set up with other messages; The audio data is then transmitted via the Real-time Transport Protocol (RTP). The spammer can this telephony software such. B. Asterisk use. The spam calls can be transmitted via gateways of the telecommunications network operators in the conventional telephone network (PSTN).

How to prevent VOIP Spam?

Many users have no problem with SPIT already being "shielded" behind NAT or a package filter, AKA firewall. Others, running a Linux server with VOIP server and client on it might be exposed to VOIP Spam. These can protect themselves by setting up one package filter rule:

iptables -A INPUT -p udp ! -s 217.10.79/24 --destination-port 5060 -j REJECT
assuming 217.10/16 is the IP range from your ISP. In this case it's Sipgate. That will throw away all UDP packages to the SIP port (5060, might differ on other setups) unless they come from 217.10.79/24.

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