⚡ Quick Verdict:
- 価格: PIA starts at $2.03/mo (2-year plan) vs Bitdefender VPN bundled from $59.99/yr (Total Security package)
- 最適な用途: PIA for privacy-focused power users, Bitdefender VPN for users who want antivirus + VPN in one package
- 主な違い： PIA offers unlimited connections and open-source apps; Bitdefender VPN caps at 10 devices and lacks Linux support
- Our pick: Private Internet Access for most users — better server network, stronger privacy, and more device support
Private Internet Access and Bitdefender VPN take very different paths to online privacy.
PIA is a standalone private internet access VPN built for privacy-first users.
Bitdefender VPN comes bundled with antivirus software.
That difference shapes everything from pricing to features.
This comparison breaks down both tools so you can pick the right one.
概要
This Private Internet Access vs Bitdefender VPN comparison covers pricing, privacy, speed, and device support.
We also break down who each VPN service works best for.
Our sources include published specs, official documentation, and user reviews.
By the end, you’ll know which VPN provider fits your needs.
プライベートインターネットアクセスとは何ですか?
Private Internet Access is a cheap VPN service built for privacy-focused users.
インターネット通信を暗号化し、実際のIPアドレスを隠します。
PIA VPN runs on every major platform, including Linux and routers.
The apps are fully open-source, so anyone can inspect the code.
Any honest private internet access review will highlight its strict no-logs policy and dedicated IP address option.
プライベートインターネットアクセス
PIA offers 35,000 servers in 91 countries with unlimited device connections. Open-source apps and a verified no-logs policy make it a top pick for privacy.
プライベートインターネットアクセス料金
PIAは、1つのプラン階層と3つの請求サイクルで、料金体系をシンプルにしています。
| プラン | 価格 | 最適な用途 |
|---|---|---|
| 2年4ヶ月 | 月額2.03ドル | 長期的な貯蓄 |
| 6ヶ月 | 月額7.50ドル | 中期ユーザー |
| 1ヶ月 | 月額11.99ドル | 短期またはテスト |
Pricing verified May 2026.
無料トライアル: 7日間無料トライアル アンドロイド and iOS via the app stores.
返金保証: 30-day refund window on all plans, no questions asked.
📌 注記： PIA does not raise prices on renewal. You pay the same rate when your plan renews. Every plan includes the same features — there are no locked tiers.
⚠️ 警告： Auto-renewal is on by default. Cancel at least 24 hours before the billing date if you want to stop. The money-back guarantee applies only to the first purchase.
プライベートインターネットアクセスの主な利点
Here’s what makes PIA VPN worth considering:
- 検証済みのログなしポリシー: Deloitte has independently audited PIA’s no-logs policy multiple times. PIA does not store browsing history, DNS queries, or connection data.
- 無制限のデバイス接続: Connect every device you own at the same time. No caps on simultaneous connections.
- オープンソースアプリ： PIA’s code is publicly available for inspection. This gives users full transparency into how the VPN works.
- MACE広告ブロッカー： PIA includes a DNS-level ad and tracker blocker called MACE. It blocks ads, trackers, and known malicious domains.
- 大規模なサーバーネットワーク: PIA runs 35,000 servers across 91 countries. That includes servers in all 50 US states. It also includes DNS servers to prevent DNS leaks and protect your browsing on mobile devices.
- 高度な分割トンネル工法： Choose which apps, IP addresses, and DNS requests go through the VPN tunnel. PIA offers app-level and IP-level split tunneling controls.
- マルチホップ接続： Route your internet traffic through two VPN servers for added privacy. This feature adds an extra layer of protection.
What Our Team Noticed
私たちの 作家 signed up for Private Internet Access and spent several days using it for everyday browsing and streaming. Here’s what stood out:
プライベートインターネットアクセスのメリットとデメリット
✅ メリット
- すべてのプランで同時接続数無制限
- Open-source apps with publicly audited no-logs policy
- 35,000 servers across 91 countries including all 50 US states
- Supports Linux, routers, and browser extensions
- 更新時の価格改定はありません
❌ デメリット
- 米国に拠点を置くファイブ・アイズ加盟国
- Download speeds drop about 49% on average
- Inconsistent streaming service access on some servers
- Interface may feel complex for VPN beginners
Bitdefender VPN とは何ですか?
Bitdefender VPN is a virtual private network built into Bitdefender’s security suite.
It uses the Catapult Hydra protocol for fast, encrypted connections.
The VPN works on Windows, macOS, Android, and iOS devices.
Most users get it as part of a Bitdefender antivirus package.
ビットディフェンダーVPN
Bitdefender Premium VPN includes 4,000+ servers in 54 countries. It pairs with Bitdefender’s antivirus for all-in-one device security.
Bitdefender VPNの価格設定
Bitdefender VPN is sold as part of security bundles. Here are the current plans.
| プラン | 価格 | 最適な用途 |
|---|---|---|
| Bitdefender Total Security | 年間59.99ドル | 基本的なウイルス対策ソフト + 限定的なVPN |
| Bitdefender Premium Security | 年間79.99ドル | ウイルス対策ソフト + 無制限VPN |
| Bitdefender Ultimate Security | 年間89.99ドル | Full security + VPN + identity |
| Bitdefender Ultimate Security Plus | 年間119.99ドル | Maximum coverage for families |
Pricing verified May 2026.
無料トライアル: 7-day free trial available. A limited free VPN (200MB/day) comes with any Bitdefender security package.
返金保証: 30-day money-back guarantee on both monthly and annual plans.
📌 注記： The VPN is only unlimited on Premium Security and above. Total Security includes VPN but caps it at 200MB per day. Payment methods include credit cards and PayPal, but no cryptocurrency.
⚠️ 警告： First-year pricing is promotional. Renewal prices jump significantly — Premium Security renews at $129.99/yr. Turn off auto-renewal if you want to avoid the higher rate.
Bitdefender VPNの主な利点
Here’s what makes Bitdefender Premium VPN worth considering:
- オールインワンセキュリティ： Bitdefender VPN comes bundled with antivirus, anti-tracker, and web protection. You get device security and privacy in one subscription.
- カタパルト・ハイドラ・プロトコル： Bitdefender uses the Hydra protocol from ホットスポットシールド. It’s designed for fast connection speeds on short-distance servers.
- シンプルなインターフェース: The app is clean and easy to navigate. Beginners can connect to a VPN server with one tap.
- Romania-Based Company: Bitdefender is based in Romania, outside the 5 Eyes, 9 Eyes, and 14 Eyes alliances.
- 広告ブロッカーとアンチトラッカー： The VPN blocks ads and trackers while you ブラウズ. It also filters harmful websites automatically.
- 公共Wi-Fiの保護： The VPN can automatically connect when you join unsecured networks like cafes and airports.
What Our Team Noticed
Our writer signed up for Bitdefender VPN and spent time testing it for browsing and streaming. Here’s what stood out:
Bitdefender VPNのメリットとデメリット
✅ メリット
- Bundled with full antivirus and web protection suite
- Clean, beginner-friendly interface on all platforms
- Based in Romania, outside major surveillance alliances
- 24/7 live chat, email, and phone support available
❌ デメリット
- No Linux or router support limits device coverage
- Struggles to unblock Netflix and Disney+ reliably
- Privacy policy is vague about logging practices
- Renewal prices increase sharply after the first year
機能比較
Let’s compare Private Internet Access vs Bitdefender VPN across 10 key areas. Each section breaks down how the two VPN providers handle specific features.
| 特徴 | プライベートインターネットアクセス | ビットディフェンダーVPN |
|---|---|---|
| 開始価格 | 月額2.03ドル | 年間59.99ドル（月額約5ドル） |
| サーバー数 | 91か国で3万5000人 | 54か国で4,000人以上 |
| 同時接続 | 無制限 | 10 |
| キルスイッチ | ✅（通常版＋上級版） | ✅ |
| スプリットトンネリング | ✅（アプリ＋IPレベル） | ✅ |
| ログなし 監査 | ✅（デロイトによる認証済み） | ❌ |
| オープンソースアプリ | ✅ | ❌ |
| Linuxサポート | ✅ | ❌ |
| ストリーミングアクセス | Netflix, Disney+ (varies) | BBC iPlayer (limited) |
| 最適な用途 | プライバシー重視のパワーユーザー | オールインワンのセキュリティを求める初心者 |
1. サーバーネットワーク
プライベートインターネットアクセス: PIA operates 35,000 servers across 91 countries. That includes coverage in all 50 US states, which is helpful for accessing location-specific content. PIA uses RAM-only servers that wipe data on every reboot. The network also includes virtual servers for regions with limited infrastructure.
ビットディフェンダーVPN: Bitdefender offers over 4,000 servers in 54 countries. The server list is smaller, and there are no dedicated streaming-optimized servers. Performance drops on distant server locations, especially in Japan and オーストラリア.
2. Privacy and Logging
プライベートインターネットアクセス: PIA has a strict no-logs policy verified by Deloitte through multiple audits. The privacy policy clearly states that PIA does not collect browsing history, DNS queries, connection timestamps, or bandwidth logs. PIA also publishes quarterly transparency reports showing legal requests received.
ビットディフェンダーVPN: Bitdefender states it does not log web traffic or browsing history. However, the privacy policy is vague and does not have a separate logging policy for traffic logs from the VPN. Some technical data is collected for fraud prevention. There has been no independent audit of the VPN logging practices. Bitdefender does offer advanced features like an ad blocker and anti-tracker.
⚠️ 警告： Bitdefender VPN is powered by Hotspot Shield’s infrastructure. Your data passes through third-party servers, which adds a layer of complexity to privacy claims.
3. Encryption and VPN Protocols
プライベートインターネットアクセス: PIA supports both the オープンVPN protocol with AES-256 encryption and WireGuard with ChaCha20. Users can customize the encryption level and choose between protocols manually. This level of control is rare among VPN apps.
ビットディフェンダーVPN: Bitdefender uses AES-256 encryption and supports WireGuard, OpenVPN, and the proprietary Catapult Hydra protocol. The Hydra protocol is designed for speed but offers less transparency than open-source alternatives. Users can switch between protocols in the app settings.
4. キルスイッチ
プライベートインターネットアクセス: PIA provides two types of kill switches on Windows and macOS. The regular kill switch blocks internet traffic when the VPN connection drops. The advanced kill switch blocks all traffic unless connected to PIA, even before the app launches.
ビットディフェンダーVPN: Bitdefender includes a standard kill switch that shuts down internet traffic if the VPN connection drops. It works reliably but lacks the advanced always-on mode that PIA offers. There’s no app-specific kill switch option.
5. スプリットトンネリング
プライベートインターネットアクセス: PIA’s split tunneling lets you exclude specific apps and IP addresses from the VPN tunnel. You can also control DNS requests separately. This gives power users fine-grained control over which browser traffic goes through the VPN connection.
ビットディフェンダーVPN: Bitdefender supports split tunneling for apps and domains. You can choose which apps use the VPN tunnel and which bypass it. The feature is easy to set up but lacks the IP-level controls that PIA offers.
6. ストリーミングとブロック解除
プライベートインターネットアクセス: PIA has streaming-optimized servers that can access Netflix, Disney Plus, Amazon Prime Video, and BBC iPlayer. However, access varies by server location and may not work consistently on every attempt. PIA also supports port forwarding for incoming connections. Connection speeds are good enough for online gaming on nearby servers.
ビットディフェンダーVPN: Bitdefender VPN can unblock BBC iPlayer and some regional streaming services. However, it struggles with US Netflix, Amazon Prime Video, and Disney+ access. There are no dedicated streaming servers in the server list.
⚠️ 警告： Neither VPN guarantees 100% access to all streaming services. Streaming platforms regularly update their VPN detection methods.
7. デバイスの互換性
プライベートインターネットアクセス: PIA supports Windows, macOS, Linux, Android, iOS, and routers. Browser extensions are available for Chrome and Firefox. PIA also offers a command line app for advanced users. You can protect all your devices with a single subscription.
ビットディフェンダーVPN: Bitdefender supports Windows, macOS, Android, and iOS only. It does not work on Linux devices, routers, Apple TV, or Fire TV Stick. Mobile apps are available on the Apple App Store and Google Play. The 10-device limit may feel restrictive for larger households.
8. 速度とパフォーマンス
プライベートインターネットアクセス: PIA’s average download speed loss is around 49%. Connection speeds are generally sufficient for streaming and web browsing. Performance on Windows using the OpenVPN protocol tends to be better than WireGuard. PIA offers unlimited bandwidth on all plans.
ビットディフェンダーVPN: Bitdefender VPN uses the Catapult Hydra protocol for faster connection speeds on nearby servers. Download speeds are adequate for casual use. However, performance drops noticeably when connecting to distant server locations. Ping times may be higher than dedicated VPN providers.
9. カスタマーサポート
プライベートインターネットアクセス: PIA offers 24/7 live chat and email support. The website includes a knowledge base, guides, and a community forum. Support agents can help in English, French, German, and Romanian.
ビットディフェンダーVPN: Bitdefender provides 24/7 live chat, email, and phone support. The general support team handles all Bitdefender’s products, not just the VPN as a data processor. Email responses may take 30 minutes or more. A knowledge base with Bitdefender’s instructions and how-to guides is also available. Desktop notifications keep you updated on connection times and security events.
10. 価格設定とコスト
料金プランを並べて比較してみましょう。
| プランの種類 | プライベートインターネットアクセス | ビットディフェンダーVPN |
|---|---|---|
| 毎月 | 月額11.99ドル | $6.99/month (standalone) |
| 年間 | $7.50/month ($45/6mo) | $59.99/year (Total Security bundle) |
| 長期 | 月額2.03ドル（2年＋4ヶ月） | $79.99/year (Premium Security) |
| 無料オプション | 7-day trial (mobile) | 200MB/day with Bitdefender package |
プライベートインターネットアクセス: PIA is an affordable VPN at $2.03/month on the long-term plan. Every plan includes the same features with no locked tiers. PIA does not raise prices on renewal, which is rare among VPN providers.
ビットディフェンダーVPN: Bitdefender’s pricing looks low initially, but the VPN is only unlimited with Premium Security ($79.99/yr) or higher. First-year pricing is promotional, and renewal costs jump significantly. If you only need a VPN (not antivirus), PIA costs less overall.
さまざまなシナリオ
| 必要な場合は | 選ぶ | なぜ |
|---|---|---|
| 予算が限られている | ぴあ | $2.03/mo vs $59.99/yr |
| 最大限のプライバシー | ぴあ | 監査済み、ログなし、オープンソース |
| ウイルス対策ソフト＋VPNバンドル | ビットディフェンダー | オールインワンセキュリティスイート |
| Linuxまたはルーターのサポート | ぴあ | BitdefenderにはLinuxアプリがありません |
| 初心者向け | ビットディフェンダー | Simpler interface, fewer settings |
| ストリーミングアクセス | ぴあ | More streaming services supported |
| デバイス数無制限 | ぴあ | No connection cap |
💰 あなたの予算
PIA is the cheaper option at $2.03/month for 2 years. Bitdefender’s cheapest plan with unlimited VPN is $79.99/yr, and it jumps to $129.99 on renewal.
🔌 あなたの技術スタック
If you use Linux or need router-level VPN protection, PIA is your only option here. Bitdefender VPN only works on Windows, macOS, Android, and iOS.
🛡️ あなたのプライバシーのニーズ
PIA’s open-source apps and Deloitte-audited no-logs policy make it the stronger choice for user privacy. Bitdefender’s privacy policy lacks the same level of clarity and has no independent VPN audit.
🎓 あなたの経験レベル
Bitdefender’s clean design makes it easy for VPN beginners. PIA offers more settings and customization, which suits power users who want control over their internet connection.
🆓 無料トライアルとデモ
Both offer 7-day free trials. Bitdefender also gives you a free VPN with 200MB/day if you have any active Bitdefender product. PIA’s trial is available through the Apple App Store and Google Play.
🛟 サポートオプション
Bitdefender offers phone support in addition to live chat and email. PIA has 24/7 live chat and email but no phone line. Both have knowledge bases with guides.
切り替えガイド
既にこれらのツールのいずれかをご利用ですか？切り替える場合、どのような変更が予想されますか？
🔄 Private Internet AccessからBitdefender VPNに切り替えますか？
✅ 得られるもの：
- Bundled antivirus and web protection in one package
- Phone support alongside live chat and email
- Simpler interface with fewer technical settings
❌ 失うもの：
- Unlimited simultaneous connections (Bitdefender caps at 10)
- Linux, router, and Smart TV support
- Open-source code and independently audited no-logs policy
📋切り替え方法：
- PIAの購読をキャンセルし、30日以内に返金を請求してください。
- Create a Bitdefender Central account and choose a Premium Security plan
- Download the Bitdefender app and activate the VPN on your devices
🔄 Bitdefender VPNからPrivate Internet Accessに切り替えますか？
✅ 得られるもの：
- Unlimited connections on all your devices at once
- 35,000 servers in 91 countries with Linux and router support
- Verified no-logs policy and open-source transparency
❌ 失うもの：
- Bundled antivirus and web protection features
- Phone support (PIA only offers chat and email)
- Automatic Wi-Fi protection that connects on unsecured networks
📋切り替え方法：
- Turn off auto-renewal on your Bitdefender Central account
- Sign up for a PIA plan and download the PIA app
- Connect to a PIA VPN server and verify your new IP address
What Our Review Didn’t Cover
This comparison focused on individual users and small households. We didn’t test enterprise VPN deployments or evaluate bulk licensing for organizations. Speed tests vary based on location, ISP throttling, and time of day, so your results may differ. We tested Private Internet Access and tested PIA across desktop and mobile. Both products update their features regularly, and this review reflects the May 2026 versions. Neither product was tested against specialist providers focused only on certain websites or specific online activities.
最終評決
| カテゴリ | 勝者 |
|---|---|
| 💰価格 | プライベートインターネットアクセス |
| 🛡️ プライバシーとログ | プライベートインターネットアクセス |
| 🌐 サーバーネットワーク | プライベートインターネットアクセス |
| 📱 デバイスサポート | プライベートインターネットアクセス |
| 👶 使いやすさ | ビットディフェンダーVPN |
| 🔌 Bundled Security | ビットディフェンダーVPN |
| 📺 ストリーミング配信 | プライベートインターネットアクセス |
| 🏆総合優勝 | プライベートインターネットアクセス |
🏆 受賞：プライベートインターネットアクセス
プライベート・インターネット・アクセスは、7部門中5部門で受賞した。
最適な用途: Privacy-focused users, Linux users, large device households, budget VPN buyers
Private Internet Access and Bitdefender VPN serve different types of users. PIA is a dedicated VPN service with open-source apps, an audited no-logs policy, and unlimited device connections. Bitdefender VPN works best for people who already use Bitdefender antivirus and want a simple VPN add-on.
Bitdefender VPN is solid for basic online security and casual browsing. However, if you need a standalone VPN with better privacy, more servers, and wider device support, Private Internet Access is the better choice.
プライベートインターネットアクセスの比較
Here’s how Private Internet Access stacks up against other VPN providers:
プライベートインターネットアクセス vs ノードVPN
PIAが勝利した点： Lower long-term pricing ($2.03/mo vs ~$3/mo), unlimited connections, open-source apps
NordVPNが優れている点： Faster download speeds, better streaming access, Threat Protection malware blocker
プライベートインターネットアクセス vs ExpressVPN
PIAが勝利した点： Much cheaper per month, unlimited device connections, IP-level split tunneling controls
ExpressVPNが優れている点： Faster raw speeds, broader streaming platform access, smoother setup for beginners
プライベートインターネットアクセス vs Surfshark
PIAが勝利した点： Larger server network (35,000 vs ~3,200), open-source transparency, US state-level coverage
Surfsharkが勝利した点： CleanWeb ad blocker, GPS spoofing on Android, slightly better streaming reliability
プライベートインターネットアクセス vs プロトンVPN
PIAが勝利した点： More servers (35,000 vs ~6,500), lower pricing, port forwarding support on all servers
Proton VPNが優れている点： Swiss jurisdiction (stronger privacy laws), free tier with no data limits, Secure Core multi-hop
Bitdefender VPNの比較
Here’s how Bitdefender VPN stacks up against other VPN services:
Bitdefender VPN vs NordVPN
Bitdefender wins on: Bundled antivirus protection, simpler interface for non-technical users, Romania-based privacy jurisdiction
NordVPNが優れている点： Much larger server network, faster speeds, dedicated streaming and P2P servers
Bitdefender VPN vs サイバーゴースト
Bitdefender wins on: Includes full antivirus suite, ad blocker built in, phone support available
CyberGhostが勝利した点： 45-day money-back guarantee, dedicated streaming servers, supports Linux and routers
Bitdefender VPN vs Surfshark
Bitdefender wins on: All-in-one security bundle, auto-connect on public Wi-Fi, easier setup for beginners
Surfsharkが勝利した点： Unlimited connections, better streaming access, GPS spoofing on Android, Linux support
よくある質問
Private Internet Access は安全に使用できますか?
Yes. PIA uses AES-256 encryption and has a no-logs policy verified by Deloitte. The apps are open-source, which means anyone can review the code for security flaws. Many reviewers consider it a top tier VPN for privacy.
Bitdefender VPNは信頼できるのか？
Bitdefender is a reputable cybersecurity company based in Romania. The VPN uses AES-256 encryption and does not log web traffic. However, there’s no independent audit of the VPN’s logging practices, and the privacy policy could be clearer.
PIA VPNは追跡可能ですか？
PIA encrypts your internet traffic and hides your actual IP address. The no-logs policy means there’s no connection data stored on the servers. This makes tracking very difficult, though no VPN can guarantee absolute anonymity.
Bitdefender VPNはNetflixで使えますか？
Bitdefender VPN has limited success with Netflix. It can access BBC iPlayer and some regional services, but it often fails to unblock US Netflix and Disney+. If streaming is a priority, PIA or a dedicated streaming VPN may be a better fit.
Which VPN is better for privacy — PIA or Bitdefender?
PIA is the stronger option for privacy. It has open-source apps, a Deloitte-audited strict no-logs policy, and quarterly transparency reports. Bitdefender’s VPN runs on third-party infrastructure and has a less transparent privacy policy.
How many servers does PIA have?
PIA covers 91 countries with 35,000 servers. That’s far more than most VPN providers offer. The network includes a UK server and servers in all 50 US states, making PIA useful for unblocking streaming content and keeping your data private from online threats.
Are there any Private Internet Access deals available?
The best deal is the 2-year plan at $2.03/month. PIA sometimes offers extra months free with long-term plans. All plans include the same features, and there are no identifying data or targeted ads in the app. Check the latest version of PIA’s pricing page for current offers.
What does Bitdefender Premium VPN include?
A Bitdefender Premium VPN review shows it includes unlimited traffic, an ad blocker, anti-tracker, and access to geo restricted content. It connects to your Bitdefender Central account for managing all your devices. The VPN processes data through randomly generated tokens rather than storing user and device IDs directly, which provides some privacy protection.
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