Tag Archives: bot

Fake Law Firm Invoices

Today’s article is about another round of fake law firm invoices. (Don’t open them, ransom ware and virus payloads). Now, typically they ‘should’ all be going to your spam folders, as the majority of them are coming from non-email servers, … Continue reading

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The IRS did not send you this.

The recent increase in BOT generated spam is VERY good at social engineering, and while fortunately most of it can be blocked using very simple spam protection rules, unfortunately the payload can be VERY painful, eg RansomWare or CryptoLocker pay … Continue reading

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Old Fashioned Bot Network, Compromised Accounts

We have been doing a lot of reporting of networks that house spammers, but today we have a chance to talk about an old fashioned bot network. Normally, they are going out of style as a way to send spam, … Continue reading

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Very Large BOT activates

As of about 36 hours ago, another large bot activated in order to send spam and perform dictionary attacks. And as usual, this could have been mitigated if more ISP’s blocked port 25 outbound. This BOT was substantial enough to … Continue reading

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ISP’s DYNA IP’s, blocking port 25

As another large infection spreads across the ‘Internet of Things’, it is time to ask the question again, why aren’t ISP’s and Telco’s routinely blocking outbound connections from their dynamic IP Space to port 25. Not that most spam protections … Continue reading

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New Twist on HELO Bot

Our spam auditors noticed that a variation on a previous bot that simply opened up a HELO and then quit has surfaced, similar to the ylmf-pc bot. All it does it send a HELO greeting, usually from www.randomchars.com, and then … Continue reading

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EHLO command received: ylmf-pc

An interesting Bot style attack, if you see this in your logs. Normally originating from DUL/Dynamic addressing ranges, this is a high impact attack, which simply connects to a mail server, issues a HELO/EHLO of ylmf-pc, and then exits the … Continue reading

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Latest Bot Spam Making the rounds

A risk free antiobesity drug.. yeah right.. Normally this shouldn’t affect most people, as it is coming from compromised devices and not email servers, and it looks to be going out to a database of hacked or stolen email addresses … Continue reading

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