15:[[43687696,{"by":"stpn","descendants":9,"id":43687696,"kids":[43689722,43688105,43688848,43688798,43707069,43690080,43687956],"score":6,"text":"I have location services turned off while I’m not using the app and background app refresh turned off in iOS, but somehow Lyft still knows I’m at the airport and serves me a push notification ad.

I want to turn this off but I can’t think of how this is happening in the first place.","time":1744675995,"title":"Ask HN: How does the iOS Lyft app detect that I landed at the airport?","type":"story"}],[43680101,{"by":"incolumitas","descendants":0,"id":43680101,"kids":[43690066],"score":1,"time":1744629771,"title":"Live Proxy and VPN Detection","type":"story","url":"https://proxydetect.live/"}],[43121528,{"by":"zdw","descendants":2,"id":43121528,"kids":[43122235,43121615,43124645],"score":5,"time":1740092231,"title":"Geoblocking the UK with Debian and Nginx","type":"story","url":"https://aphyr.com/posts/379-geoblocking-the-uk-with-debian-nginx"}],[42267749,{"by":"Lukem121","descendants":4,"id":42267749,"kids":[42307982,42268443,42271946,42270026],"score":15,"text":"Hey!

I'm a solo developer having fun learning Go. I have a side hustle and wanted to implement currency localization. I could use existing IP databases, but hosting on serverless is slow. So I built my own.

I was surprised how fun it can be to use Go, and it's fast. Thankfully, Go's speed makes up for my dodgy code.

Anyway, I'd love to get some feedback on my website/API. After a few weeks of testing and losing money on ads, I'm confident it's very reliable.

This isn't a promo. It's basicly free (30k lookups/month), so there's no need to pay.

Any advice or tips on how to grow and what you would do differently?","time":1732820552,"title":"Show HN: I Made a Ultra-Low Latency IP Geolocation API in Go","type":"story","url":"https://www.ipflare.io/"}],[41962822,{"by":"todsacerdoti","descendants":41,"id":41962822,"kids":[41963473,41963623,41968485,41963595,41963578,41963541,41964094,41965806,41965576,41979879,41963884,41963832,41969962,41984591,41967967,41966538],"score":137,"time":1730039229,"title":"Using less memory to look up IP addresses in Mess With DNS","type":"story","url":"https://jvns.ca/blog/2024/10/27/asn-ip-address-memory/"}],[41787491,{"by":"adrobushevskiy","descendants":0,"id":41787491,"kids":[41795495],"score":3,"time":1728479017,"title":"Show HN: I created a WHOIS API service","type":"story","url":"https://whs.is"}],[41471799,{"by":"shivam-dev","descendants":11,"id":41471799,"kids":[41472566,41472294,41472358,41472366,41472447,41478685,41472682],"score":26,"time":1725689112,"title":"Check for malicious IPs using DNS","type":"story","url":"https://ipshield.dev/"}],[41327394,{"by":"marinesebastian","descendants":107,"id":41327394,"kids":[41379688,41379893,41379008,41381727,41382471,41379992,41380280,41384084,41378885,41384721,41380001,41381117,41381873,41378958,41386376,41379249,41381568,41386695,41382532,41378492,41380987,41380319,41378841],"score":319,"time":1724404239,"title":"The journey of an internet packet: Exploring networks with traceroute","type":"story","url":"https://sebastianmarines.com/post/journey-of-a-packet-exploring-networks-with-traceroute/"}],[41167800,{"by":"Airyisland","descendants":53,"id":41167800,"kids":[41169671,41169321,41169241,41169453,41169153,41168884,41168877,41168866,41177911,41168899,41171961,41169047,41168851,41168914,41168890,41168973,41178691,41169082],"score":53,"time":1722919112,"title":"IP.network: Check IP Address","type":"story","url":"https://www.ip.network"}],[40966262,{"by":"VioletVillain","descendants":11,"id":40966262,"kids":[41092192,40968217,40991498,40991351,40992187,40994377],"score":44,"text":"$16","time":1721033938,"title":"Show HN: Blitzping – A far faster nping/hping3 SYN-flood alternative with CIDR","type":"story","url":"https://github.com/Thraetaona/Blitzping"}],[40961842,{"by":"TemporaryMail","descendants":94,"id":40961842,"kids":[40962174,40965094,40965898,40963972,40965193,40963469,40965073,40964909,40961930,40965222,40993785,40964790,40965677],"score":54,"text":"$17","time":1720974953,"title":"Show HN: An ad free temporary mail service","type":"story"}],[40801940,{"by":"geocrasher","descendants":8,"id":40801940,"kids":[40801958,40801977,40806796],"score":2,"time":1719420561,"title":"Just Your IP","type":"story","url":"https://justyourip.com"}],[40492975,{"by":"42newuser","descendants":12,"id":40492975,"kids":[40493079,40493138,40496552],"score":5,"text":"$18","time":1716832158,"title":"Show HN: I built an API to detect and verify disposable or temp email addresses","type":"story","url":"https://unwrap.email"}],[40302346,{"by":"JuliusHenke","descendants":2,"id":40302346,"kids":[40302644,40305889],"score":3,"text":"$19","time":1715199139,"title":"Show HN: Explore Tor relays on a world map over time","type":"story","url":"https://tormap.org"}],[40164337,{"by":"Bromeo","descendants":116,"id":40164337,"kids":[40166135,40165589,40166010,40172373,40165897,40166641,40165588,40165896,40166326,40165919,40165766,40167736,40165932,40165785,40166365,40176466,40167144,40166766,40166602,40167379,40165886,40192256,40165930,40165380,40167211,40166521,40165101,40165629],"score":169,"time":1714087927,"title":"Visualizing malicious IP addresses","type":"story","url":"https://romeov.github.io/malicious_ip_addresses/malicious_ip_analysis.html"}],[39918343,{"by":"thisislife2","descendants":9,"id":39918343,"kids":[39920655,39923761,39918592,39919201,39939735],"score":1,"text":"Since I moved to a new ISP, I've noticed that both Google and Amazon are now able to better geolocate me (Amazon even lists the correct pin / zip code). With my older ISPs, Google and Amazon sometimes even listed other cities or wrong pin / zip code within my city. I have disabled geolocation on both my browser and os (with a firewall) and don't believe that is the source. Moreover, I tested with a cellular hotspot connection too (which is from a different company) and Google and Amazon aren't able to determine the location accurately with them, as they do with my wired ISP. So what could my new ISP be doing different that it "leaks" my geolocation so accurately?","time":1712156316,"title":"Ask HN: How does my new ISP \"leak\" my geolocation?","type":"story"}],[39817074,{"by":"gajus","descendants":9,"id":39817074,"kids":[39817339,39817156,39817138,39817164,39823902],"score":4,"text":"I run a web app where people can sign up using their email address. Nothing unusual:

They input an email address, we send confirmation email, they click on that confirmation to continue the sign-up flow.

The challenge that I have been recently facing is that some bad actor(s) input other people emails. The bad actor cannot do anything with this since they do not have access to the email accounts. However, the problem is that those random people are now blasted with what is effectively spam. This is damaging to my service reputation because it appears like I am sending unsolicited emails.

The IPs, user-agents, etc. are all different. There is an element of sophistication to how this is executed.

It is the first time that I am dealing with this at a meaningful scale and I cannot think of what's a good way to counteract.","time":1711378412,"title":"Ask HN: What to do about random email sign-up attacks?","type":"story"}],[39271809,{"by":"salemy","descendants":2,"id":39271809,"kids":[39271810,39274346,39283497],"score":1,"time":1707204789,"title":"Best Source for Domain Whois Database and API","type":"story","url":"https://whoisfreaks.com"}],[39220528,{"by":"nomaxx117","descendants":322,"id":39220528,"kids":[39221228,39222402,39221100,39221418,39221094,39220882,39223243,39222378,39222160,39221695,39223076,39226915,39221137,39222433,39232551,39221500,39224310,39223738,39220868,39222335,39222487,39225875,39229209,39221211,39224224,39256835,39240186,39223338,39221209,39228161,39225611,39221323,39221669,39224125],"score":643,"time":1706817564,"title":"Thanksgiving 2023 security incident","type":"story","url":"https://blog.cloudflare.com/thanksgiving-2023-security-incident"}]]

user:	alam2000
created:	June 4, 2017
karma:	8