Mark Kreitzman

Crypto Investor - Security and Privacy Advocate. Get a secure mobile service from to defend against mobile hackers, backed by insurance.

[Mark Kreitzman @SecureMobile2]

@CR1337 The resellers own website domain security is very weak. Business owners better start getting their web applications secure or it’s just a matter of time before they get smoked. I’ve written many blogs about this on Medium over the last two weeks.

[Mark Kreitzman @SecureMobile2]

@CR1337 I did a few videos about these topics on the Efani YouTube channel. My results on browsers match yours. Those browser also score high for blocking trackers, browser caching of passwords, et., and defense against ad monitoring.

[Mark Kreitzman @SecureMobile2]

@CR1337 When a security product says they keep you off grid, especially mobile, it’s a laugh. Browser fingerprinting , device fingerprinting, Canvas ad IDs, all make people discoverable. Even a consistent randomness of some browser extensions make you detectable. No cookies needed.

[Mark Kreitzman @SecureMobile2]

@the_smart_ape Never use Wi-Fi without a password, could be unencrypted. Could be an “evil twin” attack - a hacker creates an SSID with the same Wi-Fi name & spoofed branded landing page. If you don’t use a VPN then you’re wide open, attacker could be up to 150M away.

[Mark Kreitzman @SecureMobile2]

@intell_on_chain @BleepinComputer Very clever scam, probably more who got hit and just don’t want to admit it. The Ledger breach caused a lot of SIM swaps and the list is still being used today to target people. The Coinbase data will be used for mobile SIM swaps as well, beware and prepare.

[Mark Kreitzman @SecureMobile2]

You don't want to be a SIM swap victim. It's painful financially and emotionally.

[EFANI Secure Cellphone Service @efani]

.@FBI has warned of a surge in SIM swapping schemes that inflicted $68M in losses in 2021, a considerable increase from $12M in 2020.

Here are a few practices to reduce sim-swap incidents:

#simswap #socialengineeringawareness #socialengineering #databreaches

[EFANI Secure Cellphone Service @efani]

.@FBI has warned of a surge in SIM swapping schemes that inflicted $68M in losses in 2021, a considerable increase from $12M in 2020.

Here are a few practices to reduce sim-swap incidents:

#simswap #socialengineeringawareness #socialengineering #databreaches

[Mark Kreitzman @SecureMobile2]

@KP4NC @jasonwhitlock Remember when the NFL hid brain injuries. Did you call all the whistleblowers stupid and ignorant back then as well? NFL is guilty of hiding evidence in the past, Pfizer has been fined billions for fraud in the past. How much did they fund your campaign?

[Mark Kreitzman @SecureMobile2]

@TeamYouTube Glad to see @TeamYouTube is working on this. I definitely saw a drop in our YT channel views which made no sense as it was growing steadily and then slam.

[EFANI Secure Cellphone Service @efani]

Since most carriers are prone to data breaches, stolen data typically include IMEI numbers. In this video, you’ll learn about #IMEI numbers, how hackers could exploit them, and address a fair amount of misconceptions that exist surrounding IMEIs:

https://t.co/8NU3LFOA8D

[Mark Kreitzman @SecureMobile2]

@elonmusk @waitbutwhy in a normal time, it would make an incredible SNL skit. Have them train Peterson and Trump at the same time.

[Mark Kreitzman @SecureMobile2]

@elonmusk @schrep try using GPS in Jakarta, Bangalore, Delhi... Even GPS can be too slow for it to be usable during rush hour.

[Mark Kreitzman @SecureMobile2]

@elonmusk I paid the $4.99 with no Blue Check showing. Do I now have to cancel the subscription after paying $4.99 and then buy a new $7.99 subscription?

[Mark Kreitzman @SecureMobile2]

Announcing the launch of the most secure mobile data service! Check it out at https://t.co/hZr9LSM08f

[Mark Kreitzman @SecureMobile2]

Check out my new video on IMSI Catchers and the threat to your mobile security.

https://t.co/p45b8cackl

[Mark Kreitzman @SecureMobile2]

@JesseSchoberg do you think the issue is that they need to check ID? When I was in Mexico City I wanted to purchase a prepaid SIM and they required ID. Most the world requires ID checks in person so they track.

[Mark Kreitzman @SecureMobile2]

@duborges @JesseSchoberg SIM swaps are the same for physical or eSIMs. Comes down to the verification of the customer and who has access to make the change. I was SIM swapped by a 3rd party mobile store employee 3k miles away in 2019, they lied to the computer that I was there with my passport.

[Mark Kreitzman @SecureMobile2]

Anyone on this list needs to be aware they are now a potential SIM swap target.

[briankrebs @briankrebs]

A large, new stolen data set incl. 22.8M email addresses and 23M SSNs surfaced in the dark web recently. Many clues suggest it's from AT&T customers. AT&T says the data didn't come from their systems, and may be tied to data incident at another company. https://t.co/92LNHekaDi

[Mark Kreitzman @SecureMobile2]

@briankrebs Brian, you published an article on SIM swaps in July and this post is tied to the SIM swap issue. Data breaches are providing hackers the ammunition to then SIM swap people to steal their crypto, email, or hack into business assets. This is an alarming post.

[Haseeb Awan - efani.com @haseeb]

Thanks @twitter for verifying @efani Secure Mobile Service !