Each post is devoted to a simple solution to a complex problem.
19 May 2025 3 minute read 0 comments I_g_o_r
In this post we consider a simple way to derive/prove the “Fortune’s formula” (see [1]), also known as Kelly criterion (see [2]). If p -denotes a probability to win a bet (or trade, etc.), O -denotes decimal odds on a winning bet, L -denotes a share...
4 Apr 2025 1 minute read 4 comments I_g_o_r
Zero-click attacks are attacks, which do not require any interactions with users. Zero-click attacks are the latest in an endless variety of crypto wallet hacks. As a rule, zero-click attacks exploit vulnerabilities in software or hardware of users d...
2 Apr 2025 1 minute read 0 comments I_g_o_r
Recent hacks of cryptos, controlled by private keys stored in hardware wallets (see [1-4]), forced prudent crypto holders to diversify into virtual wallets as a secure tool to manage private keys. In the previous post, an example was given on how to...
28 Mar 2025 3 minute read 0 comments I_g_o_r
Many authors recommend to follow some procedure or method, consisting from a number of steps, to reach a desired goal. There are many “How to …” books, which popularize such approach. But, the main problem with this approach is that even if we do mos...
9 Mar 2025 2 minute read 0 comments I_g_o_r
Recent hack of Bybit, where a private key from the cold wallet was used to make fraudulent transactions valued over 1.4 bln. USD, shows that cold wallets are not as secure as it is advertised and believed. Virtual wallets are more secure, because the...
15 Jan 2025 1 minute read 2 comments I_g_o_r
In 2024, several companies published results of their experiments with error corrections in quantum systems. It was reported, that for the first time in over 30 years of research, they observed that quantum chips with error correction algorithms and...
8 Jan 2025 1 minute read 0 comments I_g_o_r
A crypto wallet drainer is an app, script, computer program or a set of computer instructions designed to automatically empty crypto wallets exposed to the wallet drainer (see [1-2]). Such wallet drainers may be embedded into mobile phone apps, compu...
11 Dec 2024 4 minute read 2 comments I_g_o_r
Epictetus was born as a slave in 55 A.D. Despite this misfortune he was able to become a free man due to his talents, wise decisions, and actions. His teacher of stoicism was Gaius Musonius Rufus. Epictetus taught in Rome until 94 A.D. when the emper...
26 Nov 2024 9 minute read 18 comments I_g_o_r
A day when quantum computers will be able to break all modern (not post quantum) encryption algorithms is called the Q-day (or the first quantum supremacy day or the first quantum crypto break day). It has a very significant importance for all digita...
20 Nov 2024 1 minute read 0 comments I_g_o_r
All popular crypto wallets and passwords managers are not ready for the Q-day. All hardware crypto wallets can be hacked, even without quantum computers (see [1]). Microsoft and Atom Computing are planning to sell commercial quantum computers in 2025...
