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Key Tools Used by Spammers
Spammers utilize a wide array of tools to harvest email addresses, mask their identity, distribute spam at scale and automate the process. Let’s explore some of the key tools that enable efficient, large-scale spam campaigns.The more email addresses a spammer has, the more recipients they can spam. To build massive lists, spammers use various email harvesting tools and services:
- Web scraping software – Browser automation tools like PhantomJS, Puppeteer, and Scrapy can programmatically crawl sites to extract emails.
- Email extractors – Dedicated tools like Email Extractor, Voila Norbert, and Hunter can harvest emails from sites.
- List buying services – Underground vendors sell millions of hacked and harvested emails.
- Phishing kits – Premade phishing site templates help collect entered emails.
- Brute forcing tools – Programs guess email formats like first.last@domain.
- Email appending services – Match names and profiles to generate email addresses.
- Referral scrapers – Grab emails from HTTP referer headers of visitors.
Since spammers prefer to remain anonymous, they use various tools to mask their identities and avoid detection:
- Proxy servers – Routing spam through third-party proxy servers hides the original IP address.
- VPN services – Virtual Private Networks allow sending spam through different geographical exit nodes.
- Tor browser – The Onion Router obscures IP address by encrypting traffic and using relays.
- Email header spoofers – Modify email headers to impersonate other sender addresses and domains.
- Disposable emails – Use temporary email addresses from AnonBox, Guerrilla Mail, etc to register for services and send spam.
- Sender identity tools – Services like Mailitude can generate fake sender personas with professional-looking LinkedIn profiles.
Botnets are networks of infected, zombie computers that spammers can remotely control to do their bidding. Let’s look at how they are built and used:
- Hackers find security flaws to break into computer systems.
- Malware payloads are installed to infect the computer and establish remote access.
- Systems are configured to quietly obey commands as botnet nodes.
- Each bot is a zombie slave that can be remotely controlled without the owner’s knowledge.
- Social engineering like phishing tricks users into downloading malware.
- Exploit kits and drive-by downloads silently install malware from malicious sites.
- Brute forcing attacks guess weak passwords to break into systems.
- Unpatched software vulnerabilities provide openings for injections.
To unleash spam at scale, spammers use dedicated email blasting and spamming tools that automate sending:
- Email bombing/spamming tools – Programs like SNeaker, SMAIL, Avalanche, etc that allow blasting email lists with personalized or randomized message content.
- Phishing frameworks – Kits like Blackeye, SocialFish, ShellPhish help spam personalized phishing sites to collect credentials.
- Email testing and verification – Identify dead email addresses before spamming to maximize deliverability.
- Spam bots – Automated bots continuously scrape sites for emails, register accounts and send spam.
- Email throttling – Limit sending rate to avoid crossing provider sending limits.
- Open and click tracking – Track user engagement with spam to refine messages.
- Spam metrics – Tools provide stats on delivery rates, opens, clicks, and more to optimize campaigns.
So in summary, spammers have access to a robust toolkit of harvesting, anonymizing, botnet and spamming tools to perpetrate their crimes at scale. While daunting, understanding these key weapons in the spammer arsenal is important for bolstering defenses.