Krebs on Security

SEPTEMBER 29, 2021

In February, KrebsOnSecurity wrote about a novel cybercrime service that helped attackers intercept the one-time passwords (OTPs) that many websites require as a second authentication factor in addition to passwords. And all of them operate via Telegram , a cloud-based instant messaging system.

Passwords 319

Passwords Mobile Authentication Banking 319

Krebs on Security

MAY 19, 2021

Many online services allow users to reset their passwords by clicking a link sent via SMS, and this unfortunately widespread practice has turned mobile phone numbers into de facto identity documents. Which means losing control over one thanks to a divorce, job termination or financial crisis can be devastating.

Mobile 346

Mobile Wireless Authentication Accountability 346

Krebs on Security

NOVEMBER 3, 2020

Two young men from the eastern United States have been hit with identity theft and conspiracy charges for allegedly stealing bitcoin and social media accounts by tricking employees at wireless phone companies into giving away credentials needed to remotely access and modify customer account information. Prosecutors say Jordan K.

Scams 300

Scams Wireless Identity Theft Mobile 300

Krebs on Security

AUGUST 30, 2022

Those who submitted credentials were then prompted to provide the one-time password needed for multi-factor authentication. In a blog post earlier this month, Cloudflare said it detected the account takeovers and that no Cloudflare systems were compromised. Image: Cloudflare.com. 2, and Aug. According to an Aug.

Mobile 288

Mobile Phishing Authentication Accountability 288

Krebs on Security

NOVEMBER 23, 2018

I later received an email from the seller, who said his Amazon account had been hacked and abused by scammers to create fake sales. But this assurance may ring hollow if you wake up one morning to find your checking accounts emptied by card thieves after shopping at a breached merchant with a debit card.

Scams 272

Scams Wireless Phishing Banking 272

Krebs on Security

JULY 29, 2021

Every time there is another data breach, we are asked to change our password at the breached entity. Our continued reliance on passwords for authentication has contributed to one toxic data spill or hack after another.

Passwords 355

Passwords Password Management Phishing Scams 355

Krebs on Security

FEBRUARY 28, 2023

Countless websites and online services use SMS text messages for both password resets and multi-factor authentication. But in a written statement, T-Mobile said this type of activity affects the entire wireless industry. “Just because a targeted account takeover is low volume doesn’t mean it’s low risk.

Mobile 310

Mobile Phishing Authentication Advertising 310