Complex sentence: While envelope and header addresses may be equal, forged e-mail addresses are often seen in spam, phishing, and many other Internet-based scams; this has led to several initiatives which aim to make such forgeries easier to spot.
Split into simpler sentences: While envelope and header addresses may be equal, forged email addresses are often seen in spam, phishing, and many other internet-based scams. This has led to several initiatives which aim to make such forgeries easier to spot.