fissingu to nisesaito wo sakeru.

Here, と means and. It connects the two things being avoided:

• フィッシング = phishing
• 偽サイト = fake sites / fraudulent websites

So フィッシング と 偽サイト means phishing and fake sites.

In this sentence, と is simply listing two nouns.

Because the two nouns are being treated as one combined object of the verb.

So:

• フィッシング と 偽サイト = phishing and fake sites
• を 避ける = avoid

Japanese often puts one particle after the whole list, instead of repeating it after each item.

So this is natural Japanese:

• フィッシング と 偽サイト を避ける。

Repeating を after both nouns would sound unnatural in a simple sentence like this.

避ける means to avoid, to keep away from, or to steer clear of.

In this sentence, it means avoiding dangerous or harmful things such as phishing and fake websites.

It is a very common verb and can be used for many kinds of avoidance:

• 危険を避ける = avoid danger
• 人混みを避ける = avoid crowds
• トラブルを避ける = avoid trouble

The dictionary form 避ける is often used in Japanese for:

• headings
• warnings
• instructions
• labels
• short written advice

So フィッシング と 偽サイト を 避ける。 can feel like:

• Avoid phishing and fake sites.
• To avoid phishing and fake sites
• a short title or safety instruction

In full conversation, you might also see:

• フィッシングと偽サイトを避けてください。 = Please avoid phishing and fake sites.
• フィッシングと偽サイトを避けましょう。 = Let’s avoid phishing and fake sites.

It is usually read にせサイト.

• 偽 = fake / false
• サイト = site

So 偽サイト means fake website or fraudulent site.

A learner might expect an on-yomi reading like ぎ, but in this common expression, にせサイト is the natural reading.

Because it is a loanword from English phishing.

Katakana is commonly used for:

• foreign loanwords
• imported technical terms
• internet/security vocabulary
• emphasis in some cases

So フィッシング is the standard way to write phishing in Japanese.

を marks the direct object of the verb.

The verb is 避ける = to avoid, and the thing being avoided is:

• フィッシング と 偽サイト

So を shows what is being avoided.

A simple structure is:

• A を 避ける = avoid A

Here:

• フィッシングと偽サイトを避ける = avoid phishing and fake sites

Yes, the subject is omitted, which is very common in Japanese.

This sentence does not explicitly say who should avoid phishing and fake sites. Depending on context, it could mean:

• you should avoid them
• we should avoid them
• avoid them as an instruction
• to avoid them as a heading

Japanese often leaves out subjects when they are obvious from context.

Yes, normal Japanese is usually written without spaces:

• フィッシングと偽サイトを避ける。

If you see spaces, they are often added for learners to make the sentence easier to read and to show word boundaries.

So the spaced version is a teaching aid, not standard native formatting.

It can mean either, depending on context.

Japanese nouns usually do not change form for singular vs. plural the way English nouns do.

So 偽サイト can mean:

• a fake site
• fake sites
• fraudulent websites in general

In this sentence, the general meaning is probably fake websites as a category.

For a simple list of nouns, yes, と is the most straightforward and natural choice.

So:

• フィッシングと偽サイト = phishing and fake sites

There are other ways to connect nouns in Japanese, but they have different nuances. For example:

• や can mean things like ... and ...
• とか is more casual and also suggests examples

But here, since the sentence is giving a direct warning or instruction, と is the best fit.